Single Season Leaders for Winning Percentage

Not just winning, but winning more often than losing. To make this list you first need at least fifteen (15) decisions [wins plus losses] in one season. After you have those wins under your belt, you then need some seriously good pitching skill, a good team around you, and a lot more victories than losses during that same season.

Baseball Almanac is pleased to present the top one-hundred (100) all-time single season leaders in Major League winning percentage. Note: A bold faced entry denotes that the player was active during the previous Major League season.

"They want to know if I'm tired. I always say 'no,' I've pitched so many times that once more doesn't matter." - Pittsburgh Pirates Pitcher Roy Face (#1 Ranked Single Season Winning Percentage Leader)
Winning Percentage
Single Season Leaders

'Top 500'

Clay Buchholz .000 (.00000) 2013 Boston Red Sox AL 1
Patrick Corbin .000 (.00000) 2013 Arizona Diamondbacks NL  
Matt Harvey .000 (.00000) 2013 New York Mets NL  
Matt Moore .000 (.00000) 2013 Tampa Bay Rays AL  
Max Scherzer .000 (.00000) 2013 Detroit Tigers AL  
Roy Face .947 (.94737) 1959 Pittsburgh Pirates NL 6
Johnny Allen .938 (.93750) 1937 Cleveland Indians AL 7
Phil Regan .933 (.93333) 1966 Los Angeles Dodgers NL 8
Perry Werden .923 (.92308) 1884 St. Louis Maroons UA 9
Larry Twitchell .917 (.91667) 1887 Detroit Wolverines NL 10
Greg Maddux .905 (.90476) 1995 Atlanta Braves NL 11
Randy Johnson .900 (.90000) 1995 Seattle Mariners AL 12
Ron Guidry .893 (.89286) 1978 New York Yankees AL 13
Freddie Fitzsimmons .889 (.88889) 1940 Brooklyn Dodgers NL 14
Lefty Grove .886 (.88571) 1931 Philadelphia Athletics AL 15
Bob Stanley .882 (.88235) 1978 Boston Red Sox AL 16
Cliff Lee .880 (.88000) 2008 Cleveland Indians AL 17
Preacher Roe .880 (.88000) 1951 Brooklyn Dodgers NL  
Ron Davis .875 (.87500) 1979 New York Yankees AL 19
Fred Goldsmith .875 (.87500) 1880 Chicago White Stockings NL  
Lance Lynn .875 (.87500) 2013 St. Louis Cardinals NL  
Deacon Phillippe .875 (.87500) 1910 Pittsburgh Pirates NL  
Tom Seaver .875 (.87500) 1981 Cincinnati Reds NL  
Joe Wood .872 (.87179) 1912 Boston Red Sox AL 24
Roger Clemens .870 (.86957) 2001 New York Yankees AL 25
David Cone .870 (.86957) 1988 New York Mets NL  
Roger Moret .867 (.86667) 1973 Boston Red Sox AL 27
Orel Hershiser .864 (.86364) 1985 Los Angeles Dodgers NL 28
Bill Donovan .862 (.86207) 1907 Detroit Tigers AL 29
Whitey Ford .862 (.86207) 1961 New York Yankees AL  
Jason Bere .857 (.85714) 1994 Chicago White Sox AL 31
Roger Clemens .857 (.85714) 1986 Boston Red Sox AL  
Dwight Gooden .857 (.85714) 1985 New York Mets NL  
Charlie Hodnett .857 (.85714) 1884 St. Louis Maroons UA  
Jon Lester .857 (.85714) 2013 Boston Red Sox AL  
Daisuke Matsuzaka .857 (.85714) 2008 Boston Red Sox AL  
Mike Nagy .857 (.85714) 1969 Boston Red Sox AL  
Eddie Rommel .857 (.85714) 1929 Philadelphia Athletics AL  
Harry Wheeler .857 (.85714) 1878 Providence Grays NL  
Eddie Yuhas .857 (.85714) 1952 St. Louis Cardinals NL  
Pedro Martinez .852 (.85185) 1999 Boston Red Sox AL 41
Chief Bender .850 (.85000) 1914 Philadelphia Athletics AL 42
John Smoltz .850 (.85000) 1998 Atlanta Braves NL  
Lefty Grove .848 (.84848) 1930 Philadelphia Athletics AL 44
Mike Hampton .846 (.84615) 1999 Houston Astros NL 45
Sandy Consuegra .842 (.84211) 1954 Chicago White Sox AL 46
Tom Hughes .842 (.84211) 1916 Boston Braves NL  
Kyle Lohse .842 (.84211) 2012 St. Louis Cardinals NL  
Ron Perranoski .842 (.84211) 1963 Los Angeles Dodgers NL  
Schoolboy Rowe .842 (.84211) 1940 Detroit Tigers AL  
Ralph Terry .842 (.84211) 1961 New York Yankees AL  
Emil Yde .842 (.84211) 1924 Pittsburgh Pirates NL  
Ian Kennedy .840 (.84000) 2011 Arizona Diamondbacks NL 53
Lefty Gomez .839 (.83871) 1934 New York Yankees AL 54
Bill Hoffer .838 (.83784) 1895 Baltimore Orioles NL 55
Denny McLain .838 (.83784) 1968 Detroit Tigers AL  
Walter Johnson .837 (.83721) 1913 Washington Senators AL 57
Henry Boyle .833 (.83333) 1884 St. Louis Maroons UA 58
Spud Chandler .833 (.83333) 1943 New York Yankees AL  
King Cole .833 (.83333) 1910 Chicago Cubs NL  
Doug Fister .833 (.83333) 2013 Detroit Tigers AL  
Marvin Freeman .833 (.83333) 1994 Colorado Rockies NL  
Hisashi Iwakuma .833 (.83333) 2013 Seattle Mariners AL  
Randy Johnson .833 (.83333) 1997 Seattle Mariners AL  
Sandy Koufax .833 (.83333) 1963 Los Angeles Dodgers NL  
Pedro Martinez .833 (.83333) 2002 Boston Red Sox AL  
Hoyt Wilhelm .833 (.83333) 1952 New York Giants NL  
Old Hoss Radbourn .831 (.83099) 1884 Providence Grays NL 68
Randy Johnson .828 (.82759) 2002 Arizona Diamondbacks NL 69
Justin Verlander .828 (.82759) 2011 Detroit Tigers AL  
Greg Maddux .826 (.82609) 1997 Atlanta Braves NL 71
Ed Reulbach .826 (.82609) 1906 Chicago Cubs NL  
Elmer Riddle .826 (.82609) 1941 Cincinnati Reds NL  
Jack Chesbro .824 (.82353) 1902 Pittsburgh Pirates NL 74
Juan Guzman .824 (.82353) 1993 Toronto Blue Jays AL  
Jay Hughes .824 (.82353) 1899 Brooklyn Superbas NL  
Bob Moose .824 (.82353) 1969 Pittsburgh Pirates NL  
Roger Moret .824 (.82353) 1975 Boston Red Sox AL  
Al Orth .824 (.82353) 1899 Philadelphia Phillies NL  
Roy Oswalt .824 (.82353) 2001 Houston Astros NL  
Wayne Simpson .824 (.82353) 1970 Cincinnati Reds NL  
Dazzy Vance .824 (.82353) 1924 Brooklyn Robins NL  
Chief Bender .821 (.82143) 1910 Philadelphia Athletics AL 83
Bob Purkey .821 (.82143) 1962 Cincinnati Reds NL  
Barry Zito .821 (.82143) 2002 Oakland Athletics AL  
Joe Boever .818 (.81818) 1994 Detroit Tigers AL 86
Roger Clemens .818 (.81818) 2004 Houston Astros NL  
Sal Maglie .818 (.81818) 1950 New York Giants NL  
Mark Portugal .818 (.81818) 1993 Houston Astros NL  
Bob Welch .818 (.81818) 1990 Oakland Athletics AL  
David Wells .818 (.81818) 1998 New York Yankees AL  
Joe McGinnity .814 (.81395) 1904 New York Giants NL 92
Mordecai Brown .812 (.81250) 1906 Chicago Cubs NL 93
Jim Coates .812 (.81250) 1960 New York Yankees AL  
Atley Donald .812 (.81250) 1939 New York Yankees AL  
Bob Feller .812 (.81250) 1954 Cleveland Indians AL  
Russ Ford .812 (.81250) 1910 New York Highlanders AL  
Moose Haas .812 (.81250) 1983 Milwaukee Brewers AL  
Al Hrabosky .812 (.81250) 1975 St. Louis Cardinals NL  
Carl Hubbell .812 (.81250) 1936 New York Giants NL  
Tommy John .812 (.81250) 1974 Los Angeles Dodgers NL  
Howie Krist .812 (.81250) 1942 St. Louis Cardinals NL  
Al McBean .812 (.81250) 1963 Pittsburgh Pirates NL  
Jamie Moyer .812 (.81250) 1996 Boston Red Sox AL  
Seattle Mariners AL
Eddie Plank .812 (.81250) 1912 Philadelphia Athletics AL  
Rip Sewell .812 (.81250) 1948 Pittsburgh Pirates NL  
Jorge Sosa .812 (.81250) 2005 Atlanta Braves NL  
Hooks Wiltse .812 (.81250) 1904 New York Giants NL  
Dizzy Dean .811 (.81081) 1934 St. Louis Cardinals NL 109
Paul Abbott .810 (.80952) 2001 Seattle Mariners AL 110
Johnny Allen .810 (.80952) 1932 New York Yankees AL  
Chris Carpenter .810 (.80952) 2009 St. Louis Cardinals NL  
Doc Crandall .810 (.80952) 1910 New York Giants NL  
Jimmy Key .810 (.80952) 1994 New York Yankees AL  
Phil Niekro .810 (.80952) 1982 Atlanta Braves NL  
Ed Reulbach .810 (.80952) 1907 Chicago Cubs NL  
Ted Wilks .810 (.80952) 1944 St. Louis Cardinals NL  
Tiny Bonham .808 (.80769) 1942 New York Yankees AL 118
Chris Carpenter .808 (.80769) 2005 St. Louis Cardinals NL  
Alvin Crowder .808 (.80769) 1928 St. Louis Browns AL  
Catfish Hunter .808 (.80769) 1973 Oakland Athletics AL  
Larry Jansen .808 (.80769) 1947 New York Giants NL  
Clayton Kershaw .808 (.80769) 2011 Los Angeles Dodgers NL  
Dave McNally .808 (.80769) 1971 Baltimore Orioles AL  
Bobo Newsom .808 (.80769) 1940 Detroit Tigers AL  
Howie Camnitz .806 (.80645) 1909 Pittsburgh Pirates NL 126
Dave Ferriss .806 (.80645) 1946 Boston Red Sox AL  
Juan Marichal .806 (.80645) 1966 San Francisco Giants NL  
Christy Mathewson .806 (.80645) 1909 New York Giants NL  
Eddie Cicotte .806 (.80556) 1919 Chicago White Sox AL 130
Babe Adams .800 (.80000) 1909 Pittsburgh Pirates NL 131
Joe Beggs .800 (.80000) 1940 Cincinnati Reds NL  
John Candelaria .800 (.80000) 1977 Pittsburgh Pirates NL  
Steve Comer .800 (.80000) 1981 Texas Rangers AL  
Stan Coveleski .800 (.80000) 1925 Washington Senators AL  
Ed Doheny .800 (.80000) 1902 Pittsburgh Pirates NL  
John Franco .800 (.80000) 1985 Cincinnati Reds NL  
Tommy Greene .800 (.80000) 1993 Philadelphia Phillies NL  
Larry Gura .800 (.80000) 1978 Kansas City Royals AL  
Jesse Haines .800 (.80000) 1931 St. Louis Cardinals NL  
Bert Humphries .800 (.80000) 1913 Chicago Cubs NL  
Sam Leever .800 (.80000) 1905 Pittsburgh Pirates NL  
Francisco Liriano .800 (.80000) 2006 Minnesota Twins AL  
Jeff Locke .800 (.80000) 2013 Pittsburgh Pirates NL  
Ed Lopat .800 (.80000) 1953 New York Yankees AL  
Firpo Marberry .800 (.80000) 1931 Washington Senators AL  
Denny Neagle .800 (.80000) 1997 Atlanta Braves NL  
Don Newcombe .800 (.80000) 1955 Brooklyn Dodgers NL  
Juan Nicasio .800 (.80000) 2013 Colorado Rockies NL  
Ivan Nova .800 (.80000) 2011 New York Yankees AL  
Jim Palmer .800 (.80000) 1969 Baltimore Orioles AL  
Bobby Parnell .800 (.80000) 2013 New York Mets NL  
Brad Penny .800 (.80000) 2007 Los Angeles Dodgers NL  
David Price .800 (.80000) 2012 Tampa Bay Rays AL  
Rick Rhoden .800 (.80000) 1976 Los Angeles Dodgers NL  
Robin Roberts .800 (.80000) 1952 Philadelphia Phillies NL  
Johan Santana .800 (.80000) 2003 Minnesota Twins AL  
Alfredo Simon .800 (.80000) 2013 Cincinnati Reds NL  
George Stone .800 (.80000) 1973 New York Mets NL  
Jered Weaver .800 (.80000) 2012 Los Angeles Angels of Anaheim AL  
Mickey Welch .800 (.80000) 1885 New York Giants NL  
Ed Wells .800 (.80000) 1930 New York Yankees AL  
Jordan Zimmermann .800 (.80000) 2013 Washington Nationals NL  
Al Spalding .797 (.79661) 1876 Chicago White Stockings NL 164
Don Newcombe .794 (.79412) 1956 Brooklyn Dodgers NL 165
Jocko Flynn .793 (.79310) 1886 Chicago White Stockings NL 166
Ellis Kinder .793 (.79310) 1949 Boston Red Sox AL  
Sal Maglie .793 (.79310) 1951 New York Giants NL  
Bret Saberhagen .793 (.79310) 1989 Kansas City Royals AL  
Wally Bunker .792 (.79167) 1964 Baltimore Orioles AL 170
Shawn Estes .792 (.79167) 1997 San Francisco Giants NL  
Felix Hernandez .792 (.79167) 2009 Seattle Mariners AL  
Sandy Koufax .792 (.79167) 1964 Los Angeles Dodgers NL  
Dutch Leonard .792 (.79167) 1914 Boston Red Sox AL  
Joe Black .789 (.78947) 1952 Brooklyn Dodgers NL 175
Hank Borowy .789 (.78947) 1942 New York Yankees AL  
Harry Brecheen .789 (.78947) 1945 St. Louis Cardinals NL  
Larry French .789 (.78947) 1942 Brooklyn Dodgers NL  
Lefty Grove .789 (.78947) 1939 Boston Red Sox AL  
Don Gullett .789 (.78947) 1975 Cincinnati Reds NL  
Red Lucas .789 (.78947) 1936 Pittsburgh Pirates NL  
Roy Mahaffey .789 (.78947) 1931 Philadelphia Athletics AL  
Wade Miller .789 (.78947) 2002 Houston Astros NL  
Joe Bush .788 (.78788) 1922 New York Yankees AL 184
Bill James .788 (.78788) 1914 Boston Braves NL  
Fred Klobedanz .788 (.78788) 1897 Boston Beaneaters NL  
Rick Aguilera .786 (.78571) 1987 New York Mets NL 187
Mark Clark .786 (.78571) 1994 Cleveland Indians AL  
Atley Donald .786 (.78571) 1942 New York Yankees AL  
Doug Drabek .786 (.78571) 1990 Pittsburgh Pirates NL  
Tom Glavine .786 (.78571) 1993 Atlanta Braves NL  
Ron Guidry .786 (.78571) 1985 New York Yankees AL  
Don Gullett .786 (.78571) 1976 Cincinnati Reds NL  
Harry Gumbert .786 (.78571) 1936 New York Giants NL  
Randy Gumpert .786 (.78571) 1946 New York Yankees AL  
Steve Hargan .786 (.78571) 1970 Cleveland Indians AL  
Mike Henneman .786 (.78571) 1987 Detroit Tigers AL  
Matt Herges .786 (.78571) 2000 Los Angeles Dodgers NL  
Joe Heving .786 (.78571) 1939 Boston Red Sox AL  
Tex Hughson .786 (.78571) 1942 Boston Red Sox AL  
Jouett Meekin .786 (.78571) 1894 New York Giants NL  
Clarence Mitchell .786 (.78571) 1930 New York Giants NL  
St. Louis Cardinals NL
Red Munger .786 (.78571) 1944 St. Louis Cardinals NL  
Preacher Roe .786 (.78571) 1953 Brooklyn Dodgers NL  
Eddie Rommel .786 (.78571) 1927 Philadelphia Athletics AL  
Curt Schilling .786 (.78571) 2001 Arizona Diamondbacks NL  
Adam Wainwright .786 (.78571) 2008 St. Louis Cardinals NL  
Lon Warneke .786 (.78571) 1932 Chicago Cubs NL  
Vance Worley .786 (.78571) 2011 Philadelphia Phillies NL  
Bob Caruthers .784 (.78431) 1889 Brooklyn Bridegrooms AA 210
George Mullin .784 (.78378) 1909 Detroit Tigers AL 211
Bill Bernhard .783 (.78261) 1902 Cleveland Blues AL 212
Philadelphia Athletics AL
Tom Browning .783 (.78261) 1988 Cincinnati Reds NL  
Bartolo Colon .783 (.78261) 1999 Cleveland Indians AL  
Tex Hughson .783 (.78261) 1944 Boston Red Sox AL  
Jack Kramer .783 (.78261) 1948 Boston Red Sox AL  
Cliff Lee .783 (.78261) 2005 Cleveland Indians AL  
Tim Lincecum .783 (.78261) 2008 San Francisco Giants NL  
Jack Manning .783 (.78261) 1876 Boston Red Stockings NL  
Mike Mussina .783 (.78261) 1992 Baltimore Orioles AL  
Bob Ojeda .783 (.78261) 1986 New York Mets NL  
Johnny Podres .783 (.78261) 1961 Los Angeles Dodgers NL  
Bryn Smith .783 (.78261) 1985 Montreal Expos NL  
Paul Derringer .781 (.78125) 1939 Cincinnati Reds NL 224
Bill Hoffer .781 (.78125) 1896 Baltimore Orioles NL  
Sam Leever .781 (.78125) 1903 Pittsburgh Pirates NL  
Mel Parnell .781 (.78125) 1949 Boston Red Sox AL  
Tom Seaver .781 (.78125) 1969 New York Mets NL  
Steve Stone .781 (.78125) 1980 Baltimore Orioles AL  
Johnny Beazley .778 (.77778) 1942 St. Louis Cardinals NL 230
Bob Caruthers .778 (.77778) 1884 St. Louis Browns AA  
Roger Clemens .778 (.77778) 1990 Boston Red Sox AL  
Yu Darvish .778 (.77778) 2013 Texas Rangers AL  
Russ Ford .778 (.77778) 1914 Buffalo Buffeds FL  
Lefty Grove .778 (.77778) 1938 Boston Red Sox AL  
Don Gullett .778 (.77778) 1977 New York Yankees AL  
Bump Hadley .778 (.77778) 1936 New York Yankees AL  
Randy Johnson .778 (.77778) 2001 Arizona Diamondbacks NL  
Ed Klepfer .778 (.77778) 1917 Cleveland Indians AL  
Ray Kolp .778 (.77778) 1922 St. Louis Browns AL  
Mat Latos .778 (.77778) 2012 Cincinnati Reds NL  
Pedro Martinez .778 (.77778) 2003 Boston Red Sox AL  
Joe McGinnity .778 (.77778) 1900 Brooklyn Superbas NL  
Bobby Mitchell .778 (.77778) 1878 Cincinnati Reds NL  
John Montefusco .778 (.77778) 1983 New York Yankees AL  
San Diego Padres NL
Jack Morris .778 (.77778) 1992 Toronto Blue Jays AL  
Art Nehf .778 (.77778) 1924 New York Giants NL  
Gaylord Perry .778 (.77778) 1978 San Diego Padres NL  
Bret Saberhagen .778 (.77778) 1994 New York Mets NL  
Curt Schilling .778 (.77778) 2004 Boston Red Sox AL  
Tom Seaver .778 (.77778) 1977 Cincinnati Reds NL  
New York Mets NL
Pete Vuckovich .778 (.77778) 1981 Milwaukee Brewers AL  
Bob Welch .778 (.77778) 1985 Los Angeles Dodgers NL  
Bob Wickman .778 (.77778) 1993 New York Yankees AL  
Cy Young .778 (.77778) 1895 Cleveland Spiders NL  
Jack Coombs .775 (.77500) 1910 Philadelphia Athletics AL 256
Christy Mathewson .775 (.77500) 1905 New York Giants NL  
Whitey Ford .774 (.77419) 1963 New York Yankees AL 258
Lefty Gomez .774 (.77419) 1932 New York Yankees AL  
Clark Griffith .774 (.77419) 1901 Chicago White Stockings AL  
Rube Marquard .774 (.77419) 1911 New York Giants NL  
Ed Reulbach .774 (.77419) 1908 Chicago Cubs NL  
Jack Sanford .774 (.77419) 1962 San Francisco Giants NL  
Bobby Shantz .774 (.77419) 1952 Philadelphia Athletics AL  
Frank Viola .774 (.77419) 1988 Minnesota Twins AL  
Rube Waddell .774 (.77419) 1902 Philadelphia Athletics AL  
Jack Chesbro .774 (.77358) 1904 New York Highlanders AL 267
Chief Bender .773 (.77273) 1911 Philadelphia Athletics AL 268
Bert Blyleven .773 (.77273) 1989 California Angels AL  
Bill Campbell .773 (.77273) 1976 Minnesota Twins AL  
Jamie Moyer .773 (.77273) 1997 Seattle Mariners AL  
Charles Nagy .773 (.77273) 1996 Cleveland Indians AL  
CC Sabathia .773 (.77273) 2001 Cleveland Indians AL  
Jason Schmidt .773 (.77273) 2003 San Francisco Giants NL  
Dolf Luque .771 (.77143) 1923 Cincinnati Reds NL 275
Vic Willis .771 (.77143) 1899 Boston Beaneaters NL  
Christy Mathewson .771 (.77083) 1908 New York Giants NL 277
Mordecai Brown .769 (.76923) 1907 Chicago Cubs NL 278
John Clarkson .769 (.76923) 1884 Chicago White Stockings NL  
Roger Clemens .769 (.76923) 1998 Toronto Blue Jays AL  
R.A. Dickey .769 (.76923) 2012 New York Mets NL  
Carl Erskine .769 (.76923) 1953 Brooklyn Dodgers NL  
Charlie Ferguson .769 (.76923) 1886 Philadelphia Phillies NL  
Tom Glavine .769 (.76923) 1998 Atlanta Braves NL  
Bob Grim .769 (.76923) 1954 New York Yankees AL  
Lefty Grove .769 (.76923) 1929 Philadelphia Athletics AL  
Tim Hudson .769 (.76923) 2000 Oakland Athletics AL  
Ray Kremer .769 (.76923) 1926 Pittsburgh Pirates NL  
Bill Lee .769 (.76923) 1935 Chicago Cubs NL  
Jon Lieber .769 (.76923) 2001 Chicago Cubs NL  
Dolf Luque .769 (.76923) 1919 Cincinnati Reds NL  
Ramon Martinez .769 (.76923) 1990 Los Angeles Dodgers NL  
Andy Messersmith .769 (.76923) 1974 Los Angeles Dodgers NL  
Jamie Moyer .769 (.76923) 2001 Seattle Mariners AL  
Jerry Nops .769 (.76923) 1897 Baltimore Orioles NL  
Jim Perry .769 (.76923) 1969 Minnesota Twins AL  
Bret Saberhagen .769 (.76923) 1985 Kansas City Royals AL  
Johan Santana .769 (.76923) 2004 Minnesota Twins AL  
Rick Sutcliffe .769 (.76923) 1984 Chicago Cubs NL  
Cleveland Indians AL
Jesse Tannehill .769 (.76923) 1900 Pittsburgh Pirates NL  
Jesse Tannehill .769 (.76923) 1902 Pittsburgh Pirates NL  
Mike Torrez .769 (.76923) 1981 Boston Red Sox AL  
Will White .769 (.76923) 1882 Cincinnati Red Stockings AA  
John Clarkson .768 (.76812) 1885 Chicago White Stockings NL 304
Cy Young .767 (.76744) 1901 Boston Americans AL 305
Bob Gibson .767 (.76667) 1970 St. Louis Cardinals NL 306
Vean Gregg .767 (.76667) 1911 Cleveland Naps AL  
Waite Hoyt .767 (.76667) 1928 New York Yankees AL  
Walter Johnson .767 (.76667) 1924 Washington Senators AL  
Bob Lemon .767 (.76667) 1954 Cleveland Indians AL  
Jim Maloney .767 (.76667) 1963 Cincinnati Reds NL  
Orval Overall .767 (.76667) 1907 Chicago Cubs NL  
Curt Schilling .767 (.76667) 2002 Arizona Diamondbacks NL  
Warren Spahn .767 (.76667) 1953 Milwaukee Braves NL  
Warren Spahn .767 (.76667) 1963 Milwaukee Braves NL  
Earl Caldwell .765 (.76471) 1946 Chicago White Sox AL 316
Steve Carlton .765 (.76471) 1981 Philadelphia Phillies NL  
Danny Darwin .765 (.76471) 1980 Texas Rangers AL  
Al Demaree .765 (.76471) 1913 New York Giants NL  
Jesse Haines .765 (.76471) 1926 St. Louis Cardinals NL  
Ken Holloway .765 (.76471) 1925 Detroit Tigers AL  
Tommy Hunter .765 (.76471) 2010 Texas Rangers AL  
Sandy Koufax .765 (.76471) 1965 Los Angeles Dodgers NL  
Ted Lewis .765 (.76471) 1898 Boston Beaneaters NL  
Bob Muncrief .765 (.76471) 1945 St. Louis Browns AL  
Johnny Murphy .765 (.76471) 1937 New York Yankees AL  
Allie Reynolds .765 (.76471) 1954 New York Yankees AL  
Lady Baldwin .764 (.76364) 1886 Detroit Wolverines NL 328
Mordecai Brown .763 (.76316) 1908 Chicago Cubs NL 329
Charlie Buffinton .763 (.76316) 1891 Boston Red Stockings AA  
Bob Caruthers .763 (.76316) 1887 St. Louis Browns AA  
Hal Newhouser .763 (.76316) 1944 Detroit Tigers AL  
Jack Bentley .762 (.76190) 1924 New York Giants NL 333
Harry Brecheen .762 (.76190) 1944 St. Louis Cardinals NL  
Tommy Byrne .762 (.76190) 1955 New York Yankees AL  
Matt Cain .762 (.76190) 2012 San Francisco Giants NL  
Spud Chandler .762 (.76190) 1942 New York Yankees AL  
David Cone .762 (.76190) 1994 Kansas City Royals AL  
Juan Guzman .762 (.76190) 1992 Toronto Blue Jays AL  
Roy Halladay .762 (.76190) 2006 Toronto Blue Jays AL  
Ken Hill .762 (.76190) 1994 Montreal Expos NL  
Derek Holland .762 (.76190) 2011 Texas Rangers AL  
Sam Jones .762 (.76190) 1918 Boston Red Sox AL  
Red Munger .762 (.76190) 1947 St. Louis Cardinals NL  
Mike Mussina .762 (.76190) 1994 Baltimore Orioles AL  
Rosy Ryan .762 (.76190) 1923 New York Giants NL  
Rip Sewell .762 (.76190) 1940 Pittsburgh Pirates NL  
Bob Tewksbury .762 (.76190) 1992 St. Louis Cardinals NL  
Jim Bibby .760 (.76000) 1980 Pittsburgh Pirates NL 349
Larry Christenson .760 (.76000) 1977 Philadelphia Phillies NL  
John Denny .760 (.76000) 1983 Philadelphia Phillies NL  
Bill Doak .760 (.76000) 1914 St. Louis Cardinals NL  
Whitey Ford .760 (.76000) 1956 New York Yankees AL  
Roy Halladay .760 (.76000) 2011 Philadelphia Phillies NL  
Jake Peavy .760 (.76000) 2007 San Diego Padres NL  
Herb Pennock .760 (.76000) 1923 New York Yankees AL  
Eddie Plank .760 (.76000) 1906 Philadelphia Athletics AL  
David Price .760 (.76000) 2010 Tampa Bay Rays AL  
Charlie Root .760 (.76000) 1929 Chicago Cubs NL  
Dutch Ruether .760 (.76000) 1919 Cincinnati Reds NL  
Johan Santana .760 (.76000) 2006 Minnesota Twins AL  
Chien-Ming Wang .760 (.76000) 2006 New York Yankees AL  
John Burkett .759 (.75862) 1993 San Francisco Giants NL 363
Mort Cooper .759 (.75862) 1942 St. Louis Cardinals NL  
Mort Cooper .759 (.75862) 1944 St. Louis Cardinals NL  
Richard Dotson .759 (.75862) 1983 Chicago White Sox AL  
Roy Halladay .759 (.75862) 2003 Toronto Blue Jays AL  
Waite Hoyt .759 (.75862) 1927 New York Yankees AL  
Sam Leever .759 (.75862) 1906 Pittsburgh Pirates NL  
Brandon Webb .759 (.75862) 2008 Arizona Diamondbacks NL  
Juan Marichal .758 (.75758) 1963 San Francisco Giants NL 371
Sadie McMahon .758 (.75758) 1894 Baltimore Orioles NL  
Cy Young .757 (.75676) 1903 Boston Americans AL 373
Grover Alexander .756 (.75610) 1915 Philadelphia Phillies NL 374
George Haddock .756 (.75556) 1891 Boston Red Stockings AA 375
Bob Caruthers .755 (.75472) 1885 St. Louis Browns AA 376
Larry Corcoran .754 (.75439) 1880 Chicago White Stockings NL 377
Johnny Antonelli .750 (.75000) 1954 New York Giants NL 378
Luis Arroyo .750 (.75000) 1961 New York Yankees AL  
Steve Avery .750 (.75000) 1993 Atlanta Braves NL  
Jim Bibby .750 (.75000) 1979 Pittsburgh Pirates NL  
Steve Blass .750 (.75000) 1968 Pittsburgh Pirates NL  
Vida Blue .750 (.75000) 1971 Oakland Athletics AL  
Hank Borowy .750 (.75000) 1945 Chicago Cubs NL  
New York Yankees AL
Jim Bouton .750 (.75000) 1963 New York Yankees AL  
Mordecai Brown .750 (.75000) 1909 Chicago Cubs NL  
Charlie Buffinton .750 (.75000) 1884 Boston Beaneaters NL  
Lew Burdette .750 (.75000) 1953 Milwaukee Braves NL  
Rick Camp .750 (.75000) 1981 Atlanta Braves NL  
Chris Carpenter .750 (.75000) 2004 St. Louis Cardinals NL  
Roger Clemens .750 (.75000) 1997 Toronto Blue Jays AL  
Joe Corbett .750 (.75000) 1897 Baltimore Orioles NL  
Doc Crandall .750 (.75000) 1911 New York Giants NL  
Mike Cuellar .750 (.75000) 1970 Baltimore Orioles AL  
Chuck Dobson .750 (.75000) 1971 Oakland Athletics AL  
George Earnshaw .750 (.75000) 1931 Philadelphia Athletics AL  
George Earnshaw .750 (.75000) 1929 Philadelphia Athletics AL  
Mike Flanagan .750 (.75000) 1983 Baltimore Orioles AL  
Whitey Ford .750 (.75000) 1953 New York Yankees AL  
Freddy Garcia .750 (.75000) 2001 Seattle Mariners AL  
Hank Gastright .750 (.75000) 1893 Boston Beaneaters NL  
Pittsburgh Pirates NL
Lefty Gomez .750 (.75000) 1941 New York Yankees AL  
Mudcat Grant .750 (.75000) 1965 Minnesota Twins AL  
Zack Greinke .750 (.75000) 2012 Los Angeles Angels of Anaheim AL  
Milwaukee Brewers NL
Lefty Grove .750 (.75000) 1928 Philadelphia Athletics AL  
Lefty Grove .750 (.75000) 1933 Philadelphia Athletics AL  
Roy Halladay .750 (.75000) 2005 Toronto Blue Jays AL  
Cole Hamels .750 (.75000) 2007 Philadelphia Phillies NL  
Jason Hammel .750 (.75000) 2013 Baltimore Orioles AL  
Erik Hanson .750 (.75000) 1995 Boston Red Sox AL  
J.A. Happ .750 (.75000) 2009 Philadelphia Phillies NL  
Orlando Hernandez .750 (.75000) 1998 New York Yankees AL  
Joe Hesketh .750 (.75000) 1991 Boston Red Sox AL  
La Marr Hoyt .750 (.75000) 1981 Chicago White Sox AL  
Catfish Hunter .750 (.75000) 1972 Oakland Athletics AL  
Bruce Hurst .750 (.75000) 1988 Boston Red Sox AL  
Josh Johnson .750 (.75000) 2009 Florida Marlins NL  
Jimmy Key .750 (.75000) 1993 New York Yankees AL  
Eric King .750 (.75000) 1990 Chicago White Sox AL  
Sandy Koufax .750 (.75000) 1966 Los Angeles Dodgers NL  
Ed Lopat .750 (.75000) 1954 New York Yankees AL  
Pat Malone .750 (.75000) 1936 New York Yankees AL  
Firpo Marberry .750 (.75000) 1930 Washington Senators AL  
Firpo Marberry .750 (.75000) 1934 Detroit Tigers AL  
Jason Marquis .750 (.75000) 2013 San Diego Padres NL  
Pedro Martinez .750 (.75000) 2000 Boston Red Sox AL  
Christy Mathewson .750 (.75000) 1910 New York Giants NL  
Rudy May .750 (.75000) 1980 New York Yankees AL  
Carl Mays .750 (.75000) 1921 New York Yankees AL  
Jim McCormick .750 (.75000) 1885 Chicago White Stockings NL  
Providence Grays NL
Lindy McDaniel .750 (.75000) 1960 St. Louis Cardinals NL  
Russ Meyer .750 (.75000) 1953 Brooklyn Dodgers NL  
Jamie Moyer .750 (.75000) 2003 Seattle Mariners AL  
Johnny Murphy .750 (.75000) 1943 New York Yankees AL  
Joe Nathan .750 (.75000) 2003 San Francisco Giants NL  
Gary Nolan .750 (.75000) 1972 Cincinnati Reds NL  
Fred Norman .750 (.75000) 1975 Cincinnati Reds NL  
Russ Ortiz .750 (.75000) 2003 Atlanta Braves NL  
Jim Palmer .750 (.75000) 1982 Baltimore Orioles AL  
Jeff Parrett .750 (.75000) 1988 Montreal Expos NL  
Glen Perkins .750 (.75000) 2008 Minnesota Twins AL  
Ed Poole .750 (.75000) 1902 Cincinnati Reds NL  
Pittsburgh Pirates NL
Mark Prior .750 (.75000) 2003 Chicago Cubs NL  
Horacio Ramirez .750 (.75000) 2003 Atlanta Braves NL  
Dennis Rasmussen .750 (.75000) 1986 New York Yankees AL  
Jerry Reuss .750 (.75000) 1980 Los Angeles Dodgers NL  
Schoolboy Rowe .750 (.75000) 1934 Detroit Tigers AL  
Red Ruffing .750 (.75000) 1939 New York Yankees AL  
Red Ruffing .750 (.75000) 1938 New York Yankees AL  
Vern Ruhle .750 (.75000) 1980 Houston Astros NL  
Reb Russell .750 (.75000) 1917 Chicago White Sox AL  
CC Sabathia .750 (.75000) 2010 New York Yankees AL  
Slim Sallee .750 (.75000) 1919 Cincinnati Reds NL  
Jose Santiago .750 (.75000) 1967 Boston Red Sox AL  
Ferdie Schupp .750 (.75000) 1917 New York Giants NL  
Aaron Sele .750 (.75000) 2001 Seattle Mariners AL  
Bob Shaw .750 (.75000) 1959 Chicago White Sox AL  
Urban Shocker .750 (.75000) 1927 New York Yankees AL  
Bill Shores .750 (.75000) 1930 Philadelphia Athletics AL  
John Smoltz .750 (.75000) 1996 Atlanta Braves NL  
Dave Stieb .750 (.75000) 1990 Toronto Blue Jays AL  
Monty Stratton .750 (.75000) 1937 Chicago White Sox AL  
Mike Sullivan .750 (.75000) 1892 Cincinnati Reds NL  
John Tudor .750 (.75000) 1990 St. Louis Cardinals NL  
Bob Turley .750 (.75000) 1958 New York Yankees AL  
Russ Van Atta .750 (.75000) 1933 New York Yankees AL  
Justin Verlander .750 (.75000) 2007 Detroit Tigers AL  
Pete Vuckovich .750 (.75000) 1982 Milwaukee Brewers AL  
Bill Walker .750 (.75000) 1934 St. Louis Cardinals NL  
Jarrod Washburn .750 (.75000) 2002 Anaheim Angels AL  
Doc White .750 (.75000) 1906 Chicago White Sox AL  
Hoyt Wilhelm .750 (.75000) 1954 New York Giants NL  
Joe Wood .750 (.75000) 1915 Boston Red Sox AL  
Cy Young .750 (.75000) 1892 Cleveland Spiders NL  
Tim Keefe .745 (.74468) 1888 New York Giants NL 475
Cy Young .744 (.74419) 1902 Boston Americans AL 476
Claude Hendrix .744 (.74359) 1914 Chicago Whales FL 477
Juan Marichal .743 (.74286) 1968 San Francisco Giants NL 478
Hal Newhouser .743 (.74286) 1946 Detroit Tigers AL  
Noodles Hahn .742 (.74194) 1899 Cincinnati Reds NL 480
Orel Hershiser .742 (.74194) 1988 Los Angeles Dodgers NL  
Danny Jackson .742 (.74194) 1988 Cincinnati Reds NL  
Nick Maddox .742 (.74194) 1908 Pittsburgh Pirates NL  
Eddie Plank .742 (.74194) 1911 Philadelphia Athletics AL  
Bucky Walters .742 (.74194) 1944 Cincinnati Reds NL  
Gene Bearden .741 (.74074) 1948 Cleveland Indians AL 486
Josh Beckett .741 (.74074) 2007 Boston Red Sox AL  
Harry Brecheen .741 (.74074) 1948 St. Louis Cardinals NL  
Steve Carlton .741 (.74074) 1976 Philadelphia Phillies NL  
David Cone .741 (.74074) 1998 New York Yankees AL  
Bob Forsch .741 (.74074) 1977 St. Louis Cardinals NL  
Wayne Garland .741 (.74074) 1976 Baltimore Orioles AL  
Rick Helling .741 (.74074) 1998 Texas Rangers AL  
Claude Hendrix .741 (.74074) 1918 Chicago Cubs NL  
Tom Hughes .741 (.74074) 1903 Boston Americans AL  
Tommy John .741 (.74074) 1977 Los Angeles Dodgers NL  
Walter Johnson .741 (.74074) 1925 Washington Senators AL  
Al Maul .741 (.74074) 1898 Baltimore Orioles NL  
Dave McNally .741 (.74074) 1969 Baltimore Orioles AL  
Flint Rhem .741 (.74074) 1926 St. Louis Cardinals NL 500
Red Ruffing .741 (.74074) 1937 New York Yankees AL  
Current Through 2013 Season


Can the .950 plateau be broken? Could a pitcher have at least fifteen (15) decisions and still finish with a 1.000 winning percentage? It hasn't happened yet... Who has the skill? Who has the lineup? Share your opinion on our message board.

Greg Maddux, who appears on the single season leaders for winning percentage at seventh and sixtieth, set the record for consecutive Cy Young Awards won — a record tied by a different pitcher in 2002. Do you know who tied the record?

Take a moment and think about number one through number eight on the single season leaders for winning percentage chart: Each of them won at least 90% of the of their decisions during a single season.

     

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