Isolated Power is a SABERmetric statistic that attempts to describe a hitter's overall effectiveness by measuring his ability to generate extra base hits. Isolated Power was created by baseball great Branch Rickey along with Allan Roth during the 1950's and they termed it Power Average. Isolated Power is calculated by substracting batting average from slugging percentage.
Important notes: 1,000 career games played are needed to make this list, raw averages are presented to further clarify the one-hundred greatest career isolated power averages of all-time, and a bold faced entry denotes that the player was active during the previous Major League season.
"My relationship (with the San Francisco Giants) has been up and down, but for the most part has been good. This year it's been exceptionally good. You walk into a store, and you run into little old ladies who've never seen a baseball game before in their whole life, telling you what a great accomplishment you have." - Barry Bonds on ESPN.com (Bonds finishes remarkable season with 73, 10/07/2001)
Isolated PowerSingle Season Leaders | 'Top 500' |
|||||
Name | Isolated Power | Year | Team | League | Rank |
Barry Bonds | .536 (.53571) | 2001 | San Francisco Giants | NL | 1 |
Babe Ruth | .472 (.47162) | 1920 | New York Yankees | AL | 2 |
Babe Ruth | .469 (.46852) | 1921 | New York Yankees | AL | 3 |
Mark McGwire | .454 (.45383) | 1998 | St. Louis Cardinals | NL | 4 |
Barry Bonds | .450 (.45040) | 2004 | San Francisco Giants | NL | 5 |
Barry Bonds | .429 (.42928) | 2002 | San Francisco Giants | NL | 6 |
Mark McGwire | .418 (.41844) | 1996 | Oakland Athletics | AL | 7 |
Mark McGwire | .418 (.41843) | 1999 | St. Louis Cardinals | NL | 8 |
Babe Ruth | .417 (.41667) | 1927 | New York Yankees | AL | 9 |
Mark McGwire | .410 (.41009) | 1995 | Oakland Athletics | AL | 10 |
Sammy Sosa | .409 (.40901) | 2001 | Chicago Cubs | NL | 11 |
Barry Bonds | .408 (.40769) | 2003 | San Francisco Giants | NL | 12 |
Lou Gehrig | .392 (.39212) | 1927 | New York Yankees | AL | 13 |
J.D. Martinez | .387 (.38657) | 2017 | Arizona Diamondbacks | NL | 14 |
Detroit Tigers | AL | ||||
Babe Ruth | .386 (.38619) | 1928 | New York Yankees | AL | 15 |
Jimmie Foxx | .385 (.38462) | 1932 | Philadelphia Athletics | AL | 16 |
Jeff Bagwell | .383 (.38250) | 1994 | Houston Astros | NL | 17 |
Barry Bonds | .381 (.38125) | 2000 | San Francisco Giants | NL | 18 |
Frank Thomas | .376 (.37594) | 1994 | Chicago White Sox | AL | 19 |
Aaron Judge | .375 (.37544) | 2022 | New York Yankees | AL | 20 |
Albert Belle | .374 (.37363) | 1995 | Cleveland Indians | AL | 21 |
Jim Thome | .373 (.37292) | 2002 | Cleveland Indians | AL | 22 |
Babe Ruth | .373 (.37259) | 1930 | New York Yankees | AL | 23 |
Mark McGwire | .372 (.37222) | 1997 | Oakland Athletics | AL | 24 |
St. Louis Cardinals | NL | ||||
Babe Ruth | .372 (.37165) | 1923 | New York Yankees | AL | 25 |
Mickey Mantle | .370 (.36965) | 1961 | New York Yankees | AL | 26 |
Hank Greenberg | .369 (.36871) | 1938 | Detroit Tigers | AL | 27 |
Hack Wilson | .368 (.36752) | 1930 | Chicago Cubs | NL | 28 |
Babe Ruth | .366 (.36566) | 1926 | New York Yankees | AL | 29 |
Luis Gonzalez | .363 (.36289) | 2001 | Arizona Diamondbacks | NL | 30 |
Babe Ruth | .361 (.36106) | 1924 | New York Yankees | AL | 31 |
Javy Lopez | .359 (.35886) | 2003 | Atlanta Braves | NL | 32 |
Babe Ruth | .357 (.35714) | 1922 | New York Yankees | AL | 33 |
Albert Belle | .357 (.35680) | 1994 | Cleveland Indians | AL | 34 |
Jose Bautista | .357 (.35677) | 2010 | Toronto Blue Jays | AL | 35 |
Jimmie Foxx | .356 (.35575) | 1938 | Boston Red Sox | AL | 36 |
Barry Bonds | .355 (.35493) | 1999 | San Francisco Giants | NL | 37 |
Larry Walker | .354 (.35387) | 1997 | Colorado Rockies | NL | 38 |
Mike Trout | .353 (.35319) | 2019 | Los Angeles Angels | AL | 39 |
Rogers Hornsby | .353 (.35317) | 1925 | St. Louis Cardinals | NL | 40 |
Mickey Mantle | .353 (.35272) | 1956 | New York Yankees | AL | 41 |
Babe Ruth | .353 (.35271) | 1929 | New York Yankees | AL | 42 |
Ken Griffey, Jr. | .351 (.35104) | 1994 | Seattle Mariners | AL | 43 |
Roger Maris | .351 (.35085) | 1961 | New York Yankees | AL | 44 |
Travis Hafner | .350 (.35022) | 2006 | Cleveland Indians | AL | 45 |
Shohei Ohtani | .350 (.35010) | 2023 | Los Angeles Angels | AL | 46 |
Giancarlo Stanton | .350 (.35008) | 2017 | Miami Marlins | NL | 47 |
David Ortiz | .349 (.34946) | 2006 | Boston Red Sox | AL | 48 |
Todd Helton | .349 (.34923) | 2001 | Colorado Rockies | NL | 49 |
Ralph Kiner | .348 (.34791) | 1949 | Pittsburgh Pirates | NL | 50 |
Chris Davis | .348 (.34760) | 2013 | Baltimore Orioles | AL | 51 |
Jimmie Foxx | .347 (.34729) | 1933 | Philadelphia Athletics | AL | 52 |
Sammy Sosa | .347 (.34720) | 1999 | Chicago Cubs | NL | 53 |
Mike Trout | .347 (.34703) | 2022 | Los Angeles Angels | AL | 54 |
Willie Stargell | .347 (.34674) | 1973 | Pittsburgh Pirates | NL | 55 |
Manny Ramirez | .346 (.34624) | 2000 | Cleveland Indians | AL | 56 |
Aaron Judge | .346 (.34605) | 2023 | New York Yankees | AL | 57 |
Ryan Howard | .346 (.34596) | 2006 | Philadelphia Phillies | NL | 58 |
Carlos Pena | .345 (.34490) | 2007 | Tampa Bay Devil Rays | AL | 59 |
Kevin Mitchell | .344 (.34438) | 1989 | San Francisco Giants | NL | 60 |
Jim Thome | .344 (.34420) | 2010 | Minnesota Twins | AL | 61 |
Rudy York | .344 (.34400) | 1937 | Detroit Tigers | AL | 62 |
Lou Gehrig | .344 (.34370) | 1934 | New York Yankees | AL | 63 |
Jim Gentile | .344 (.34362) | 1961 | Baltimore Orioles | AL | 64 |
Aaron Judge | .343 (.34317) | 2017 | New York Yankees | AL | 65 |
Ted Williams | .343 (.34286) | 1957 | Boston Red Sox | AL | 66 |
Lou Gehrig | .343 (.34251) | 1930 | New York Yankees | AL | 67 |
Mike Zunino | .342 (.34234) | 2021 | Tampa Bay Rays | AL | 68 |
Jim Edmonds | .342 (.34228) | 2003 | St. Louis Cardinals | NL | 69 |
Ken Griffey, Jr. | .342 (.34211) | 1997 | Seattle Mariners | AL | 70 |
Lou Gehrig | .342 (.34197) | 1936 | New York Yankees | AL | 71 |
Hank Aaron | .342 (.34184) | 1973 | Atlanta Braves | NL | 72 |
Christian Yelich | .342 (.34151) | 2019 | Milwaukee Brewers | NL | 73 |
Hank Aaron | .341 (.34141) | 1971 | Atlanta Braves | NL | 74 |
Barry Bonds | .341 (.34137) | 1993 | San Francisco Giants | NL | 75 |
Jim Edmonds | .341 (.34137) | 2004 | St. Louis Cardinals | NL | |
Brady Anderson | .340 (.34024) | 1996 | Baltimore Orioles | AL | 77 |
Albert Pujols | .340 (.34019) | 2006 | St. Louis Cardinals | NL | 78 |
Willie Mays | .340 (.33966) | 1955 | New York Giants | NL | 79 |
Matt Williams | .339 (.33933) | 1994 | San Francisco Giants | NL | 80 |
Sammy Sosa | .339 (.33904) | 1998 | Chicago Cubs | NL | 81 |
Mike Schmidt | .338 (.33759) | 1980 | Philadelphia Phillies | NL | 82 |
Willie McCovey | .336 (.33605) | 1969 | San Francisco Giants | NL | 83 |
Babe Ruth | .336 (.33565) | 1919 | Boston Red Sox | AL | 84 |
Shohei Ohtani | .335 (.33520) | 2021 | Los Angeles Angels | AL | 85 |
Barry Bonds | .335 (.33504) | 1994 | San Francisco Giants | NL | 86 |
Jimmie Foxx | .334 (.33405) | 1939 | Boston Red Sox | AL | 87 |
Reggie Jackson | .333 (.33333) | 1969 | Oakland Athletics | AL | 88 |
Jim Thome | .333 (.33270) | 2001 | Cleveland Indians | AL | 89 |
Willie Stargell | .333 (.33268) | 1971 | Pittsburgh Pirates | NL | 90 |
Tony Clark | .332 (.33238) | 2005 | Arizona Diamondbacks | NL | 91 |
Hank Greenberg | .332 (.33165) | 1937 | Detroit Tigers | AL | 92 |
Alex Rodriguez | .331 (.33105) | 2007 | New York Yankees | AL | 93 |
Larry Walker | .331 (.33105) | 1999 | Colorado Rockies | NL | |
Albert Pujols | .331 (.33099) | 2009 | St. Louis Cardinals | NL | 95 |
Prince Fielder | .330 (.32984) | 2007 | Milwaukee Brewers | NL | 96 |
Hank Greenberg | .330 (.32984) | 1940 | Detroit Tigers | AL | |
Manny Ramirez | .330 (.32950) | 1999 | Cleveland Indians | AL | 98 |
Ted Williams | .329 (.32903) | 1960 | Boston Red Sox | AL | 99 |
Juan Gonzalez | .329 (.32902) | 1996 | Texas Rangers | AL | 100 |
Miguel Sanó | .329 (.32895) | 2019 | Minnesota Twins | AL | 101 |
Ted Williams | .329 (.32895) | 1941 | Boston Red Sox | AL | |
Mark McGwire | .329 (.32855) | 1987 | Oakland Athletics | AL | 103 |
Fernando Tatis Jr. | .328 (.32845) | 2021 | San Diego Padres | NL | 104 |
Nelson Cruz | .328 (.32819) | 2019 | Minnesota Twins | AL | 105 |
Willie Mays | .328 (.32796) | 1965 | San Francisco Giants | NL | 106 |
Babe Ruth | .328 (.32772) | 1931 | New York Yankees | AL | 107 |
Mike Schmidt | .328 (.32768) | 1981 | Philadelphia Phillies | NL | 108 |
Joey Gallo | .327 (.32739) | 2017 | Texas Rangers | AL | 109 |
Ken Griffey, Jr. | .327 (.32701) | 1998 | Seattle Mariners | AL | 110 |
Hank Greenberg | .327 (.32696) | 1946 | Detroit Tigers | AL | 111 |
Joe DiMaggio | .327 (.32689) | 1937 | New York Yankees | AL | 112 |
Albert Belle | .327 (.32677) | 1998 | Chicago White Sox | AL | 113 |
Al Simmons | .327 (.32671) | 1930 | Philadelphia Athletics | AL | 114 |
Derrek Lee | .327 (.32660) | 2005 | Chicago Cubs | NL | 115 |
Albert Pujols | .326 (.32601) | 2004 | St. Louis Cardinals | NL | 116 |
Todd Helton | .326 (.32586) | 2000 | Colorado Rockies | NL | 117 |
Stan Musial | .326 (.32570) | 1948 | St. Louis Cardinals | NL | 118 |
Ralph Kiner | .326 (.32566) | 1947 | Pittsburgh Pirates | NL | 119 |
Dave Kingman | .325 (.32519) | 1979 | Chicago Cubs | NL | 120 |
Ted Williams | .325 (.32490) | 1946 | Boston Red Sox | AL | 121 |
Ken Griffey, Jr. | .325 (.32477) | 1996 | Seattle Mariners | AL | 122 |
Eddie Mathews | .325 (.32470) | 1953 | Milwaukee Braves | NL | 123 |
Greg Vaughn | .325 (.32461) | 1998 | San Diego Padres | NL | 124 |
Cody Bellinger | .324 (.32437) | 2019 | Los Angeles Dodgers | NL | 125 |
Brian Giles | .324 (.32394) | 2002 | Pittsburgh Pirates | NL | 126 |
Alex Rodriguez | .324 (.32372) | 2002 | Texas Rangers | AL | 127 |
Mike Trout | .323 (.32338) | 2017 | Los Angeles Angels | AL | 128 |
Pete Alonso | .323 (.32328) | 2019 | New York Mets | NL | 129 |
Willie McCovey | .323 (.32323) | 1970 | San Francisco Giants | NL | 130 |
Juan Gonzalez | .323 (.32276) | 1993 | Texas Rangers | AL | 131 |
Richard Hidalgo | .323 (.32258) | 2000 | Houston Astros | NL | 132 |
Willie Mays | .322 (.32212) | 1954 | New York Giants | NL | 133 |
Lou Gehrig | .321 (.32149) | 1931 | New York Yankees | AL | 134 |
Johnny Mize | .321 (.32124) | 1940 | St. Louis Cardinals | NL | 135 |
Frank Robinson | .321 (.32118) | 1966 | Baltimore Orioles | AL | 136 |
Rogers Hornsby | .321 (.32103) | 1922 | St. Louis Cardinals | NL | 137 |
Matt Olson | .321 (.32072) | 2023 | Atlanta Braves | NL | 138 |
Carlos Delgado | .320 (.31986) | 2000 | Toronto Blue Jays | AL | 139 |
Troy Glaus | .320 (.31972) | 2000 | Anaheim Angels | AL | 140 |
Duke Snider | .320 (.31970) | 1955 | Brooklyn Dodgers | NL | 141 |
Carlos Beltran | .320 (.31961) | 2006 | New York Mets | NL | 142 |
Babe Ruth | .319 (.31947) | 1932 | New York Yankees | AL | 143 |
Jimmie Foxx | .319 (.31911) | 1934 | Philadelphia Athletics | AL | 144 |
Max Muncy | .319 (.31899) | 2018 | Los Angeles Dodgers | NL | 145 |
Vladimir Guerrero | .319 (.31874) | 2000 | Montreal Expos | NL | 146 |
Bryce Harper | .319 (.31862) | 2015 | Washington Nationals | NL | 147 |
Giancarlo Stanton | .318 (.31849) | 2012 | Miami Marlins | NL | 148 |
Ralph Kiner | .318 (.31827) | 1951 | Pittsburgh Pirates | NL | 149 |
Ralph Kiner | .318 (.31810) | 1950 | Pittsburgh Pirates | NL | 150 |
Harmon Killebrew | .318 (.31793) | 1961 | Minnesota Twins | AL | 151 |
Gary Sheffield | .317 (.31737) | 2000 | Los Angeles Dodgers | NL | 152 |
Jason Giambi | .317 (.31731) | 2001 | Oakland Athletics | AL | 153 |
Bob Hamelin | .317 (.31731) | 1994 | Kansas City Royals | AL | |
Rocky Colavito | .317 (.31697) | 1958 | Cleveland Indians | AL | 155 |
Mark McGwire | .317 (.31692) | 1992 | Oakland Athletics | AL | 156 |
Mike Trout | .316 (.31635) | 2018 | Los Angeles Angels | AL | 157 |
Chick Hafey | .316 (.31614) | 1930 | St. Louis Cardinals | NL | 158 |
Boog Powell | .316 (.31604) | 1964 | Baltimore Orioles | AL | 159 |
Ted Kluszewski | .316 (.31588) | 1954 | Cincinnati Redlegs | NL | 160 |
Ryan Howard | .316 (.31569) | 2007 | Philadelphia Phillies | NL | 161 |
Dick Allen | .315 (.31489) | 1966 | Philadelphia Phillies | NL | 162 |
Cody Bellinger | .315 (.31458) | 2017 | Los Angeles Dodgers | NL | 163 |
Sammy Sosa | .315 (.31457) | 2000 | Chicago Cubs | NL | 164 |
Cecil Fielder | .314 (.31414) | 1990 | Detroit Tigers | AL | 165 |
Chipper Jones | .314 (.31393) | 1999 | Atlanta Braves | NL | 166 |
Jason Giambi | .314 (.31373) | 2000 | Oakland Athletics | AL | 167 |
Eddie Mathews | .313 (.31303) | 1954 | Milwaukee Braves | NL | 168 |
Duke Snider | .313 (.31299) | 1957 | Brooklyn Dodgers | NL | 169 |
Barry Bonds | .313 (.31290) | 1992 | Pittsburgh Pirates | NL | 170 |
Eddie Mathews | .313 (.31263) | 1955 | Milwaukee Braves | NL | 171 |
Albert Belle | .312 (.31229) | 1996 | Cleveland Indians | AL | 172 |
Andruw Jones | .312 (.31229) | 2005 | Atlanta Braves | NL | |
Johnny Mize | .312 (.31229) | 1947 | New York Giants | NL | |
Juan Gonzalez | .312 (.31188) | 1998 | Texas Rangers | AL | 175 |
Larry Walker | .312 (.31187) | 2001 | Colorado Rockies | NL | 176 |
Mike Napoli | .312 (.31165) | 2011 | Texas Rangers | AL | 177 |
Willie Mays | .311 (.31142) | 1964 | San Francisco Giants | NL | 178 |
Willie Mays | .311 (.31079) | 1962 | San Francisco Giants | NL | 179 |
George Foster | .311 (.31057) | 1977 | Cincinnati Reds | NL | 180 |
Mike Schmidt | .311 (.31054) | 1979 | Philadelphia Phillies | NL | 181 |
Ryan Braun | .310 (.31042) | 2007 | Milwaukee Brewers | NL | 182 |
Jack Clark | .310 (.31026) | 1987 | St. Louis Cardinals | NL | 183 |
Gary Sheffield | .310 (.31021) | 1996 | Florida Marlins | NL | 184 |
Jim Thome | .310 (.31020) | 2006 | Chicago White Sox | AL | 185 |
Don Mincher | .310 (.31010) | 1964 | Minnesota Twins | AL | 186 |
Hank Greenberg | .310 (.31000) | 1939 | Detroit Tigers | AL | 187 |
Carlos Pena | .310 (.30998) | 2009 | Tampa Bay Rays | AL | 188 |
Bob Bailey | .310 (.30966) | 1970 | Montreal Expos | NL | 189 |
Harmon Killebrew | .308 (.30811) | 1969 | Minnesota Twins | AL | 190 |
Albert Pujols | .308 (.30795) | 2003 | St. Louis Cardinals | NL | 191 |
Ken Griffey, Jr. | .308 (.30756) | 1993 | Seattle Mariners | AL | 192 |
Barry Bonds | .308 (.30754) | 1996 | San Francisco Giants | NL | 193 |
Ted Williams | .307 (.30742) | 1949 | Boston Red Sox | AL | 194 |
Hank Aaron | .307 (.30713) | 1969 | Atlanta Braves | NL | 195 |
Jim Thome | .307 (.30709) | 2004 | Philadelphia Phillies | NL | 196 |
Glenallen Hill | .307 (.30667) | 2000 | Chicago Cubs | NL | 197 |
New York Yankees | AL | ||||
Duke Snider | .307 (.30651) | 1954 | Brooklyn Dodgers | NL | 198 |
Mel Ott | .306 (.30642) | 1929 | New York Giants | NL | 199 |
Yordan Alvarez | .306 (.30638) | 2022 | Houston Astros | AL | 200 |
Duke Snider | .306 (.30627) | 1956 | Brooklyn Dodgers | NL | 201 |
Jim Thome | .306 (.30623) | 2003 | Philadelphia Phillies | NL | 202 |
Rafael Palmeiro | .306 (.30619) | 1999 | Texas Rangers | AL | 203 |
Joe Adcock | .306 (.30617) | 1956 | Milwaukee Braves | NL | 204 |
Barry Bonds | .306 (.30616) | 1998 | San Francisco Giants | NL | 205 |
Jermaine Dye | .306 (.30612) | 2006 | Chicago White Sox | AL | 206 |
Jose Bautista | .306 (.30604) | 2011 | Toronto Blue Jays | AL | 207 |
Lance Berkman | .306 (.30597) | 2006 | Houston Astros | NL | 208 |
Sammy Sosa | .306 (.30576) | 2002 | Chicago Cubs | NL | 209 |
Jeff Bagwell | .306 (.30565) | 1997 | Houston Astros | NL | 210 |
Mickey Mantle | .306 (.30561) | 1955 | New York Yankees | AL | 211 |
David Ortiz | .305 (.30540) | 2016 | Boston Red Sox | AL | 212 |
Bryce Harper | .305 (.30533) | 2021 | Philadelphia Phillies | NL | 213 |
Jeff Bagwell | .305 (.30508) | 2000 | Houston Astros | NL | 214 |
Jim Spencer | .305 (.30508) | 1979 | New York Yankees | AL | |
Jason Giambi | .305 (.30493) | 2006 | New York Yankees | AL | 216 |
Manny Ramirez | .305 (.30473) | 1998 | Cleveland Indians | AL | 217 |
Manny Ramirez | .305 (.30458) | 2004 | Boston Red Sox | AL | 218 |
Wally Berger | .304 (.30450) | 1930 | Boston Braves | NL | 219 |
David Ortiz | .304 (.30449) | 2005 | Boston Red Sox | AL | 220 |
Jay Buhner | .304 (.30426) | 1995 | Seattle Mariners | AL | 221 |
Fred McGriff | .304 (.30425) | 1994 | Atlanta Braves | NL | 222 |
Jorge Soler | .304 (.30390) | 2019 | Kansas City Royals | AL | 223 |
Jim Bottomley | .304 (.30382) | 1928 | St. Louis Cardinals | NL | 224 |
Alex Rodriguez | .304 (.30380) | 2001 | Texas Rangers | AL | 225 |
David Ortiz | .304 (.30357) | 2003 | Boston Red Sox | AL | 226 |
Fred Lynn | .303 (.30320) | 1979 | Boston Red Sox | AL | 227 |
Prince Fielder | .303 (.30288) | 2009 | Milwaukee Brewers | NL | 228 |
Adam Dunn | .303 (.30282) | 2004 | Cincinnati Reds | NL | 229 |
Harmon Killebrew | .303 (.30254) | 1962 | Minnesota Twins | AL | 230 |
Jimmie Foxx | .302 (.30249) | 1930 | Philadelphia Athletics | AL | 231 |
Manny Ramirez | .302 (.30246) | 2001 | Boston Red Sox | AL | 232 |
David Ortiz | .302 (.30241) | 2004 | Boston Red Sox | AL | 233 |
Khris Davis | .302 (.30208) | 2018 | Oakland Athletics | AL | 234 |
Chuck Klein | .302 (.30195) | 1929 | Philadelphia Phillies | NL | 235 |
Larry Walker | .302 (.30162) | 1995 | Colorado Rockies | NL | 236 |
Alex Rodriguez | .301 (.30148) | 2003 | Texas Rangers | AL | 237 |
Ernie Banks | .301 (.30146) | 1958 | Chicago Cubs | NL | 238 |
Manny Ramirez | .301 (.30144) | 2005 | Boston Red Sox | AL | 239 |
Jim Thome | .301 (.30099) | 1996 | Cleveland Indians | AL | 240 |
Norm Cash | .301 (.30093) | 1961 | Detroit Tigers | AL | 241 |
Chuck Klein | .301 (.30093) | 1930 | Philadelphia Phillies | NL | |
J.D. Martinez | .301 (.30093) | 2023 | Los Angeles Dodgers | NL | |
Eugenio Suárez | .301 (.30087) | 2019 | Cincinnati Reds | NL | 244 |
Alex Rodriguez | .301 (.30080) | 1999 | Seattle Mariners | AL | 245 |
Shawn Green | .300 (.30048) | 2001 | Los Angeles Dodgers | NL | 246 |
Hank Greenberg | .300 (.30048) | 1935 | Detroit Tigers | AL | |
Hal Trosky | .300 (.30048) | 1936 | Cleveland Indians | AL | |
Ernie Banks | .300 (.30034) | 1955 | Chicago Cubs | NL | 249 |
Rob Deer | .300 (.30025) | 1992 | Detroit Tigers | AL | 250 |
Chris Davis | .300 (.30017) | 2015 | Baltimore Orioles | AL | 251 |
Carlos Delgado | .300 (.30000) | 1998 | Toronto Blue Jays | AL | 252 |
Mike Schmidt | .300 (.29963) | 1977 | Philadelphia Phillies | NL | 253 |
Eric Davis | .300 (.29958) | 1987 | Cincinnati Reds | NL | 254 |
Mickey Mantle | .300 (.29958) | 1957 | New York Yankees | AL | |
Brian Giles | .299 (.29942) | 1999 | Pittsburgh Pirates | NL | 256 |
Rogers Hornsby | .299 (.29900) | 1929 | Chicago Cubs | NL | 257 |
Darryl Strawberry | .299 (.29887) | 1987 | New York Mets | NL | 258 |
J.D. Martinez | .299 (.29877) | 2018 | Boston Red Sox | AL | 259 |
Roy Campanella | .299 (.29865) | 1953 | Brooklyn Dodgers | NL | 260 |
Roger Maris | .299 (.29860) | 1960 | New York Yankees | AL | 261 |
George Springer | .299 (.29854) | 2019 | Houston Astros | AL | 262 |
Rafael Palmeiro | .299 (.29853) | 2002 | Texas Rangers | AL | 263 |
Chuck Klein | .298 (.29846) | 1932 | Philadelphia Phillies | NL | 264 |
Manny Ramirez | .298 (.29844) | 2006 | Boston Red Sox | AL | 265 |
Carlos Delgado | .298 (.29843) | 1999 | Toronto Blue Jays | AL | 266 |
Manny Ramirez | .298 (.29817) | 2002 | Boston Red Sox | AL | 267 |
Frank Thomas | .298 (.29817) | 1995 | Chicago White Sox | AL | |
Ryan Klesko | .298 (.29787) | 1995 | Atlanta Braves | NL | 269 |
David Justice | .298 (.29771) | 2000 | Cleveland Indians | AL | 270 |
New York Yankees | AL | ||||
Reggie Jackson | .298 (.29767) | 1980 | New York Yankees | AL | 271 |
Orlando Cepeda | .297 (.29744) | 1961 | San Francisco Giants | NL | 272 |
Frank Robinson | .297 (.29741) | 1960 | Cincinnati Reds | NL | 273 |
Frank Thomas | .297 (.29725) | 2000 | Chicago White Sox | AL | 274 |
Andres Galarraga | .297 (.29712) | 1996 | Colorado Rockies | NL | 275 |
Harmon Killebrew | .297 (.29709) | 1963 | Minnesota Twins | AL | 276 |
Joey Votto | .297 (.29688) | 2021 | Cincinnati Reds | NL | 277 |
George Bell | .297 (.29672) | 1987 | Toronto Blue Jays | AL | 278 |
Alex Bregman | .296 (.29603) | 2019 | Houston Astros | AL | 279 |
Albert Pujols | .296 (.29580) | 2008 | St. Louis Cardinals | NL | 280 |
Ken Williams | .296 (.29573) | 1922 | St. Louis Browns | AL | 281 |
Hank Aaron | .296 (.29561) | 1962 | Milwaukee Braves | NL | 282 |
Corey Seager | .296 (.29560) | 2023 | Texas Rangers | AL | 283 |
Carl Yastrzemski | .295 (.29534) | 1967 | Boston Red Sox | AL | 284 |
Ellis Burks | .295 (.29527) | 1996 | Colorado Rockies | NL | 285 |
Darryl Strawberry | .295 (.29492) | 1998 | New York Yankees | AL | 286 |
Ken Caminiti | .295 (.29487) | 1996 | San Diego Padres | NL | 287 |
Frank Thomas | .295 (.29487) | 2003 | Chicago White Sox | AL | |
Ernie Banks | .295 (.29461) | 1957 | Chicago Cubs | NL | 289 |
Dick Allen | .294 (.29447) | 1972 | Chicago White Sox | AL | 290 |
Gorman Thomas | .294 (.29443) | 1979 | Milwaukee Brewers | AL | 291 |
Adrián Beltré | .294 (.29431) | 2004 | Los Angeles Dodgers | NL | 292 |
Mookie Betts | .294 (.29423) | 2018 | Boston Red Sox | AL | 293 |
Johnny Bench | .294 (.29421) | 1970 | Cincinnati Reds | NL | 294 |
Chick Hafey | .294 (.29400) | 1929 | St. Louis Cardinals | NL | 295 |
Miguel Cabrera | .294 (.29380) | 2010 | Detroit Tigers | AL | 296 |
Mark Teixeira | .293 (.29337) | 2015 | New York Yankees | AL | 297 |
Barry Bonds | .293 (.29323) | 1997 | San Francisco Giants | NL | 298 |
Marcus Thames | .293 (.29310) | 2006 | Detroit Tigers | AL | 299 |
Gary Sánchez | .293 (.29293) | 2019 | New York Yankees | AL | 300 |
Adam Dunn | .293 (.29282) | 2005 | Cincinnati Reds | NL | 301 |
Goose Goslin | .293 (.29281) | 1930 | St. Louis Browns | AL | 302 |
Washington Senators | AL | ||||
Juan Gonzalez | .293 (.29268) | 1997 | Texas Rangers | AL | 303 |
Pete Alonso | .293 (.29264) | 2023 | New York Mets | NL | 304 |
Jim Thome | .292 (.29234) | 1997 | Cleveland Indians | AL | 305 |
Jimmie Foxx | .292 (.29231) | 1936 | Boston Red Sox | AL | 306 |
Willie Mays | .292 (.29231) | 1957 | New York Giants | NL | |
Josh Bell | .292 (.29222) | 2019 | Pittsburgh Pirates | NL | 308 |
Ryan Howard | .292 (.29221) | 2009 | Philadelphia Phillies | NL | 309 |
Ernie Banks | .292 (.29202) | 1959 | Chicago Cubs | NL | 310 |
Joey Gallo | .292 (.29200) | 2018 | Texas Rangers | AL | 311 |
Ryan Ludwick | .292 (.29182) | 2008 | St. Louis Cardinals | NL | 312 |
Josh Hamilton | .292 (.29181) | 2012 | Texas Rangers | AL | 313 |
Ryan Howard | .292 (.29180) | 2008 | Philadelphia Phillies | NL | 314 |
Lou Gehrig | .292 (.29174) | 1937 | New York Yankees | AL | 315 |
Oscar Gamble | .292 (.29167) | 1977 | Chicago White Sox | AL | 316 |
Ted Williams | .292 (.29167) | 1947 | Boston Red Sox | AL | |
Rico Petrocelli | .292 (.29159) | 1969 | Boston Red Sox | AL | 318 |
Duke Snider | .292 (.29153) | 1953 | Brooklyn Dodgers | NL | 319 |
Gabby Hartnett | .291 (.29134) | 1930 | Chicago Cubs | NL | 320 |
Carlos Delgado | .291 (.29123) | 2003 | Toronto Blue Jays | AL | 321 |
Jeromy Burnitz | .291 (.29122) | 1999 | Milwaukee Brewers | NL | 322 |
Ted Williams | .291 (.29119) | 1942 | Boston Red Sox | AL | 323 |
Sammy Sosa | .291 (.29116) | 1996 | Chicago Cubs | NL | 324 |
Jim Thome | .291 (.29091) | 1998 | Cleveland Indians | AL | 325 |
Willie McCovey | .291 (.29084) | 1966 | San Francisco Giants | NL | 326 |
Todd Hundley | .291 (.29074) | 1996 | New York Mets | NL | 327 |
J.D. Drew | .291 (.29067) | 2001 | St. Louis Cardinals | NL | 328 |
Alex Rodriguez | .291 (.29061) | 2000 | Seattle Mariners | AL | 329 |
Mike Piazza | .290 (.29046) | 2000 | New York Mets | NL | 330 |
Ken Griffey, Jr. | .290 (.29043) | 1999 | Seattle Mariners | AL | 331 |
Mike Trout | .290 (.29043) | 2015 | Los Angeles Angels | AL | |
Ray Lankford | .290 (.29032) | 1997 | St. Louis Cardinals | NL | 333 |
Yordan Alvarez | .290 (.29024) | 2023 | Houston Astros | AL | 334 |
Jose Canseco | .290 (.29021) | 1991 | Oakland Athletics | AL | 335 |
Ted Williams | .290 (.29016) | 1954 | Boston Red Sox | AL | 336 |
Travis Hafner | .290 (.29012) | 2005 | Cleveland Indians | AL | 337 |
Andres Galarraga | .290 (.29009) | 1998 | Atlanta Braves | NL | 338 |
Joe DiMaggio | .290 (.29004) | 1939 | New York Yankees | AL | 339 |
Rafael Palmeiro | .290 (.29000) | 2001 | Texas Rangers | AL | 340 |
Rocky Colavito | .290 (.28988) | 1961 | Detroit Tigers | AL | 341 |
Curtis Granderson | .290 (.28988) | 2011 | New York Yankees | AL | |
Vladimir Guerrero Jr. | .290 (.28974) | 2021 | Toronto Blue Jays | AL | 343 |
Jimmie Foxx | .290 (.28972) | 1935 | Philadelphia Athletics | AL | 344 |
David Ortiz | .290 (.28962) | 2007 | Boston Red Sox | AL | 345 |
Frank Thomas | .290 (.28962) | 1993 | Chicago White Sox | AL | |
Lance Berkman | .289 (.28943) | 2001 | Houston Astros | NL | 347 |
Adam Dunn | .289 (.28927) | 2007 | Cincinnati Reds | NL | 348 |
Alex Rodriguez | .289 (.28926) | 2005 | New York Yankees | AL | 349 |
Josh Donaldson | .289 (.28916) | 2017 | Toronto Blue Jays | AL | 350 |
Ken Phelps | .289 (.28916) | 1987 | Seattle Mariners | AL | |
Greg Vaughn | .289 (.28909) | 1999 | Cincinnati Reds | NL | 352 |
Carlos González | .289 (.28900) | 2013 | Colorado Rockies | NL | 353 |
Al Kaline | .289 (.28894) | 1962 | Detroit Tigers | AL | 354 |
Joc Pederson | .289 (.28889) | 2019 | Los Angeles Dodgers | NL | 355 |
Harmon Killebrew | .289 (.28885) | 1967 | Minnesota Twins | AL | 356 |
Miguel Cabrera | .288 (.28829) | 2013 | Detroit Tigers | AL | 357 |
Barry Bonds | .288 (.28824) | 2007 | San Francisco Giants | NL | 358 |
Kyle Schwarber | .288 (.28822) | 2021 | Boston Red Sox | AL | 359 |
Washington Nationals | NL | ||||
Mickey Mantle | .288 (.28817) | 1964 | New York Yankees | AL | 360 |
Frank Robinson | .288 (.28807) | 1961 | Cincinnati Reds | NL | 361 |
Andy Pafko | .288 (.28794) | 1950 | Chicago Cubs | NL | 362 |
Jim Edmonds | .288 (.28762) | 2000 | St. Louis Cardinals | NL | 363 |
Bob Cerv | .287 (.28738) | 1958 | Kansas City Athletics | AL | 364 |
Nolan Arenado | .287 (.28734) | 2015 | Colorado Rockies | NL | 365 |
Ellis Burks | .287 (.28718) | 1999 | San Francisco Giants | NL | 366 |
Mickey Mantle | .287 (.28709) | 1958 | New York Yankees | AL | 367 |
Edwin Encarnacion | .287 (.28708) | 2019 | New York Yankees | AL | 368 |
Seattle Mariners | AL | ||||
Jim Thome | .287 (.28704) | 2007 | Chicago White Sox | AL | 369 |
Patrick Wisdom | .287 (.28698) | 2021 | Chicago Cubs | NL | 370 |
Cliff Johnson | .287 (.28671) | 1977 | Houston Astros | NL | 371 |
New York Yankees | AL | ||||
Joe DiMaggio | .287 (.28651) | 1941 | New York Yankees | AL | 372 |
Jeff Bagwell | .286 (.28648) | 1999 | Houston Astros | NL | 373 |
Carl Everett | .286 (.28629) | 2000 | Boston Red Sox | AL | 374 |
Eddie Mathews | .286 (.28620) | 1959 | Milwaukee Braves | NL | 375 |
Ken Phelps | .286 (.28620) | 1988 | New York Yankees | AL | |
Seattle Mariners | AL | ||||
Kyle Schwarber | .286 (.28596) | 2022 | Philadelphia Phillies | NL | 377 |
Stan Musial | .286 (.28595) | 1949 | St. Louis Cardinals | NL | 378 |
Henry Rodriguez | .286 (.28571) | 1996 | Montreal Expos | NL | 379 |
Reggie Sanders | .286 (.28571) | 2001 | Arizona Diamondbacks | NL | |
Lance Berkman | .285 (.28547) | 2002 | Houston Astros | NL | 381 |
Jay Buhner | .285 (.28546) | 1996 | Seattle Mariners | AL | 382 |
Willie McCovey | .285 (.28546) | 1963 | San Francisco Giants | NL | |
Jose Bautista | .285 (.28545) | 2015 | Toronto Blue Jays | AL | 384 |
Dick Allen | .285 (.28539) | 1969 | Philadelphia Phillies | NL | 385 |
Greg Luzinski | .285 (.28520) | 1977 | Philadelphia Phillies | NL | 386 |
Geoff Jenkins | .285 (.28516) | 2000 | Milwaukee Brewers | NL | 387 |
Jim Rice | .285 (.28508) | 1978 | Boston Red Sox | AL | 388 |
Babe Herman | .285 (.28502) | 1930 | Brooklyn Robins | NL | 389 |
Marcell Ozuna | .285 (.28491) | 2023 | Atlanta Braves | NL | 390 |
Ken Griffey, Jr. | .285 (.28462) | 2000 | Cincinnati Reds | NL | 391 |
Albert Pujols | .284 (.28450) | 2010 | St. Louis Cardinals | NL | 392 |
Dale Murphy | .284 (.28445) | 1987 | Atlanta Braves | NL | 393 |
Matt Stairs | .284 (.28409) | 1997 | Oakland Athletics | AL | 394 |
Scott Rolen | .284 (.28400) | 2004 | St. Louis Cardinals | NL | 395 |
Jason Giambi | .284 (.28393) | 2002 | New York Yankees | AL | 396 |
Lou Gehrig | .284 (.28391) | 1929 | New York Yankees | AL | 397 |
Mickey Mantle | .284 (.28382) | 1962 | New York Yankees | AL | 398 |
Joe DiMaggio | .284 (.28381) | 1950 | New York Yankees | AL | 399 |
Mark Reynolds | .284 (.28374) | 2009 | Arizona Diamondbacks | NL | 400 |
Jose Canseco | .284 (.28372) | 1999 | Tampa Bay Devil Rays | AL | 401 |
Vladimir Guerrero | .284 (.28361) | 1999 | Montreal Expos | NL | 402 |
Jimmie Foxx | .283 (.28350) | 1940 | Boston Red Sox | AL | 403 |
Carlos Quentin | .283 (.28333) | 2008 | Chicago White Sox | AL | 404 |
Ernie Banks | .283 (.28308) | 1960 | Chicago Cubs | NL | 405 |
Bill Hall | .283 (.28305) | 2006 | Milwaukee Brewers | NL | 406 |
Alfonso Soriano | .283 (.28284) | 2006 | Washington Nationals | NL | 407 |
Rhys Hoskins | .283 (.28278) | 2021 | Philadelphia Phillies | NL | 408 |
Mickey Mantle | .283 (.28273) | 1960 | New York Yankees | AL | 409 |
Mel Ott | .283 (.28269) | 1932 | New York Giants | NL | 410 |
Barry Bonds | .283 (.28261) | 1995 | San Francisco Giants | NL | 411 |
Kal Daniels | .283 (.28261) | 1987 | Cincinnati Reds | NL | |
John Lowenstein | .283 (.28261) | 1982 | Baltimore Orioles | AL | |
Reggie Sanders | .283 (.28256) | 2003 | Pittsburgh Pirates | NL | 414 |
Carlos Delgado | .282 (.28244) | 2006 | New York Mets | NL | 415 |
Frank Robinson | .282 (.28243) | 1962 | Cincinnati Reds | NL | 416 |
Cy Williams | .282 (.28224) | 1923 | Philadelphia Phillies | NL | 417 |
Ken Williams | .282 (.28224) | 1925 | St. Louis Browns | AL | |
Charlie Keller | .282 (.28205) | 1941 | New York Yankees | AL | 419 |
Phil Nevin | .282 (.28205) | 2001 | San Diego Padres | NL | |
José Ramírez | .282 (.28201) | 2018 | Cleveland Indians | AL | 421 |
Andre Dawson | .282 (.28180) | 1987 | Chicago Cubs | NL | 422 |
Ripper Collins | .282 (.28167) | 1934 | St. Louis Cardinals | NL | 423 |
Kyle Schwarber | .282 (.28166) | 2019 | Chicago Cubs | NL | 424 |
Walker Cooper | .282 (.28155) | 1947 | New York Giants | NL | 425 |
Ted Williams | .281 (.28142) | 1939 | Boston Red Sox | AL | 426 |
Hank Aaron | .281 (.28140) | 1959 | Milwaukee Braves | NL | 427 |
Albert Pujols | .281 (.28136) | 2001 | St. Louis Cardinals | NL | 428 |
Jose Canseco | .281 (.28130) | 1998 | Toronto Blue Jays | AL | 429 |
Brian Giles | .281 (.28125) | 2001 | Pittsburgh Pirates | NL | 430 |
Tino Martinez | .281 (.28114) | 1997 | New York Yankees | AL | 431 |
Dick Allen | .281 (.28105) | 1970 | St. Louis Cardinals | NL | 432 |
Babe Ruth | .281 (.28105) | 1933 | New York Yankees | AL | |
Dave Hansen | .281 (.28099) | 2000 | Los Angeles Dodgers | NL | 434 |
Khris Davis | .281 (.28092) | 2017 | Oakland Athletics | AL | 435 |
Rudy York | .281 (.28078) | 1938 | Detroit Tigers | AL | 436 |
Ellis Burks | .281 (.28066) | 1997 | Colorado Rockies | NL | 437 |
Troy Glaus | .281 (.28061) | 2001 | Anaheim Angels | AL | 438 |
Carlos Beltran | .280 (.28047) | 2004 | Houston Astros | NL | 439 |
Kansas City Royals | AL | ||||
Edwin Encarnacion | .280 (.28030) | 2015 | Toronto Blue Jays | AL | 440 |
David Ortiz | .280 (.28030) | 2015 | Boston Red Sox | AL | |
Daryle Ward | .280 (.28030) | 2000 | Houston Astros | NL | |
Carlos Delgado | .280 (.28023) | 2005 | Florida Marlins | NL | 443 |
Dave Winfield | .280 (.28015) | 1982 | New York Yankees | AL | 444 |
Albert Pujols | .280 (.28013) | 2022 | St. Louis Cardinals | NL | 445 |
John Jaha | .280 (.28009) | 1999 | Oakland Athletics | AL | 446 |
Dick Stuart | .280 (.28008) | 1961 | Pittsburgh Pirates | NL | 447 |
Jeff Bagwell | .280 (.28000) | 2001 | Houston Astros | NL | 448 |
Raul Ibanez | .280 (.28000) | 2009 | Philadelphia Phillies | NL | |
Darryl Strawberry | .280 (.27990) | 1985 | New York Mets | NL | 450 |
Dante Bichette | .280 (.27979) | 1995 | Colorado Rockies | NL | 451 |
Freddie Freeman | .280 (.27955) | 2017 | Atlanta Braves | NL | 452 |
Henry Rodriguez | .280 (.27952) | 1998 | Chicago Cubs | NL | 453 |
Willie McCovey | .279 (.27937) | 1973 | San Francisco Giants | NL | 454 |
Ken Phelps | .279 (.27931) | 1984 | Seattle Mariners | AL | 455 |
Albert Pujols | .279 (.27919) | 2005 | St. Louis Cardinals | NL | 456 |
Shohei Ohtani | .279 (.27914) | 2018 | Los Angeles Angels | AL | 457 |
Brian Giles | .279 (.27907) | 2000 | Pittsburgh Pirates | NL | 458 |
Ken Phelps | .279 (.27907) | 1986 | Seattle Mariners | AL | |
Greg Vaughn | .279 (.27907) | 1996 | Milwaukee Brewers | AL | |
San Diego Padres | NL | ||||
Lucas Duda | .279 (.27896) | 2017 | New York Mets | NL | 461 |
Tampa Bay Rays | AL | ||||
Anthony Rendon | .279 (.27890) | 2019 | Washington Nationals | NL | 462 |
Mark Teixeira | .279 (.27890) | 2004 | Texas Rangers | AL | |
Edwin Encarnacion | .279 (.27883) | 2014 | Toronto Blue Jays | AL | 464 |
Frank Howard | .279 (.27872) | 1969 | Washington Senators | AL | 465 |
Shawn Green | .279 (.27850) | 1999 | Toronto Blue Jays | AL | 466 |
Luis Robert Jr. | .278 (.27839) | 2023 | Chicago White Sox | AL | 467 |
Cal Raleigh | .278 (.27838) | 2022 | Seattle Mariners | AL | 468 |
Hank Aaron | .278 (.27805) | 1957 | Milwaukee Braves | NL | 469 |
Brian Dozier | .278 (.27805) | 2016 | Minnesota Twins | AL | |
Ron Gant | .278 (.27805) | 1995 | Cincinnati Reds | NL | |
Roy Sievers | .278 (.27797) | 1957 | Washington Senators | AL | 472 |
Charles Johnson | .278 (.27791) | 2000 | Baltimore Orioles | AL | 473 |
Chicago White Sox | AL | ||||
Joe DiMaggio | .278 (.27778) | 1948 | New York Yankees | AL | 474 |
Richie Sexson | .278 (.27778) | 2005 | Seattle Mariners | AL | |
Max Muncy | .278 (.27767) | 2021 | Los Angeles Dodgers | NL | 476 |
Frank Howard | .278 (.27759) | 1968 | Washington Senators | AL | 477 |
Stan Musial | .278 (.27750) | 1954 | St. Louis Cardinals | NL | 478 |
Khris Davis | .277 (.27748) | 2016 | Oakland Athletics | AL | 479 |
Matt Olson | .277 (.27743) | 2019 | Oakland Athletics | AL | 480 |
Mark Trumbo | .277 (.27732) | 2016 | Baltimore Orioles | AL | 481 |
Harmon Killebrew | .277 (.27730) | 1964 | Minnesota Twins | AL | 482 |
Nolan Arenado | .277 (.27723) | 2017 | Colorado Rockies | NL | 483 |
Al Rosen | .277 (.27713) | 1953 | Cleveland Indians | AL | 484 |
Al Simmons | .277 (.27711) | 1929 | Philadelphia Athletics | AL | 485 |
Frank Thomas | .277 (.27704) | 1996 | Chicago White Sox | AL | 486 |
Mike Piazza | .277 (.27698) | 1997 | Los Angeles Dodgers | NL | 487 |
Bob Robertson | .277 (.27692) | 1970 | Pittsburgh Pirates | NL | 488 |
Kyle Schwarber | .277 (.27692) | 2023 | Philadelphia Phillies | NL | |
Chris Carter | .277 (.27687) | 2016 | Milwaukee Brewers | NL | 490 |
Danny Tartabull | .277 (.27686) | 1991 | Kansas City Royals | AL | 491 |
Johnny Mize | .277 (.27684) | 1938 | St. Louis Cardinals | NL | 492 |
Edwin Encarnacion | .277 (.27675) | 2012 | Toronto Blue Jays | AL | 493 |
Jason Giambi | .277 (.27664) | 2003 | New York Yankees | AL | 494 |
Brandon Lowe | .277 (.27664) | 2021 | Tampa Bay Rays | AL | |
Adam Dunn | .277 (.27660) | 2008 | Arizona Diamondbacks | NL | 496 |
Cincinnati Reds | NL | ||||
Howard Johnson | .277 (.27660) | 1991 | New York Mets | NL | |
Johnny Mize | .277 (.27660) | 1939 | St. Louis Cardinals | NL | |
Duke Snider | .277 (.27660) | 1960 | Los Angeles Dodgers | NL | |
Miguel Cabrera | .277 (.27653) | 2012 | Detroit Tigers | AL | 500 |
Name | Isolated Power | Year | Team | League | Rank |
Current Through 2023 Season |
Why is the Isolated Power statistic not used commonly? Should it be used more often? Is it better than on base plus slugging? Share your opinion on Baseball Fever where we have an entire forum dedicated to advanced statistics.
The American League single season record for isolated power was set in 1920 by Babe Ruth of the New York Yankees. The National League single season record for isolated power was set in 2001 by Barry Bonds of the San Francisco Giants.
Bonds, McGwire and Ruth are the only three (3) players in Major League history with a career isolated power mark greater than .299, but which one of these single season isolated power dominators is the career leader for isolated power?