Baseball Player Autographs (Letter O)

Baseball Player Autographs (Letter O)

Baseball Almanac is pleased to present a list of EVERY Major League player with a last name that starts with an 'O' on our site whose player page includes an autographed baseball card. Included on the chart are links to the players biography, the years he played, and a (HOF) Hall of Fame mark (Y=Yes). Bold entries stand for active players which are defined as those who played in at least one Major League game during the most recently completed season.

"The fun-loving brothers (Johnny & Eddie O'Brien) derived great pleasure from confusing managers, and the Topps baseball card company, as to who was who; Topps solved the problem one year by putting both of them on one card." - Author Ellery Clark on BaseballLibrary.com

Baseball Player Autographs A Classic Collection (Letter O)
Player Name	Years Played	HOF
Mike O'Berry Autograph	1979 - 1985
Charlie O'Brien Autograph	1985 - 2000
Dan O'Brien Autograph	1978 - 1979
Eddie O'Brien Autograph	1953 - 1958
Johnny O'Brien Autograph	1953 - 1959
Pete O'Brien Autograph	1982 - 1993
Syd O'Brien Autograph	1969 - 1972
Brian O'Connor Autograph	2000 - 2000
Jack O'Connor Autograph	1981 - 1987
Mike O'Connor Autograph	2006 - 2011
Billy O'Dell Autograph	1954 - 1967
John O'Donoghue Autograph	1963 - 1971
John O'Donoghue Autograph	1993 - 1993
Bob O'Farrell Autograph	1915 - 1935
Eric O'Flaherty Autograph	2006 - 2011
Greg O'Halloran Autograph	1994 - 1994
Troy O'Leary Autograph	1993 - 2003
Ryan O'Malley Autograph	2006 - 2006
Tom O'Malley Autograph	1982 - 1990
Randy O'Neal Autograph	1984 - 1990
Paul O'Neill Autograph	1985 - 2001
Jim O'Toole Autograph	1958 - 1967
Johnny Oates Autograph	1970 - 1981
Sherman Obando Autograph	1993 - 1997
Ken Oberkfell Autograph	1977 - 1992
Wes Obermueller Autograph	2002 - 2007
Alex Ochoa Autograph	1995 - 2002
Ivan Ochoa Autograph	2008 - 2008
Blue Moon Odom Autograph	1964 - 1976
Bryan Oelkers Autograph	1983 - 1986
Trent Oeltjen Autograph	2009 - 2011
Joe Oeschger Autograph	1914 - 1925
Ron Oester Autograph	1978 - 1990
Jose Offerman Autograph	1990 - 2005
Rowland Office Autograph	1972 - 1983
Chad Ogea Autograph	1994 - 1999
Ben Oglivie Autograph	1971 - 1986
Tomo Ohka Autograph	1999 - 2009
Ross Ohlendorf Autograph	2007 - 2011
Kevin Ohme Autograph	2003 - 2003
Augie Ojeda Autograph	2000 - 2010
Bob Ojeda Autograph	1980 - 1994
Hideki Okajima Autograph	2007 - 2011
Jim Olander Autograph	1991 - 1991
Bob Oldis Autograph	1953 - 1963
John Olerud Autograph	1989 - 2005
Steve Olin Autograph	1989 - 1992
Jose Oliva Autograph	1994 - 1995
Tony Oliva Autograph	1962 - 1976
Ed Olivares Autograph	1960 - 1961
Omar Olivares Autograph	1990 - 2001
Al Oliver Autograph	1968 - 1985
Bob Oliver Autograph	1965 - 1975
Darren Oliver Autograph	1993 - 2011
Gene Oliver Autograph	1959 - 1969
Joe Oliver Autograph	1989 - 2001
Nate Oliver Autograph	1963 - 1969
Francisco Oliveras Autograph	1989 - 1992
Miguel Olivo Autograph	2002 - 2011
Jim Ollom Autograph	1966 - 1967
Ray Olmedo Autograph	2003 - 2007
Al Olmsted Autograph	1980 - 1980
Scott Olsen Autograph	2005 - 2010
Vern Olsen Autograph	1939 - 1946
Garrett Olson Autograph	2007 - 2011
Greg Olson Autograph	1989 - 1993
Gregg Olson Autograph	1988 - 2001
Karl Olson Autograph	1951 - 1957
Tim Olson Autograph	2004 - 2005
Ed Olwine Autograph	1986 - 1988
Steve Ontiveros Autograph	1973 - 1980
Steve Ontiveros Autograph	1985 - 2000
Jose Oquendo Autograph	1983 - 1995
Mike Oquist Autograph	1993 - 1999
Ernie Oravetz Autograph	1955 - 1956
Luis Ordaz Autograph	1997 - 2006
Magglio Ordonez Autograph	1997 - 2011
Rey Ordonez Autograph	1996 - 2004
Joe Orengo Autograph	1939 - 1945
Kevin Orie Autograph	1997 - 2002
Jesse Orosco Autograph	1979 - 2003
Pete Orr Autograph	2005 - 2011
John Orsino Autograph	1961 - 1967
Joe Orsulak Autograph	1983 - 1997
Jorge Orta Autograph	1972 - 1987
Bill Ortega Autograph	2001 - 2001
Phil Ortega Autograph	1960 - 1969
David Ortiz Autograph	1997 - 2011
Javier Ortiz Autograph	1990 - 1991
Junior Ortiz Autograph	1982 - 1994
Luis Ortiz Autograph	1993 - 1996
Ramon Ortiz Autograph	1999 - 2011
Russ Ortiz Autograph	1998 - 2010
Daniel Ortmeier Autograph	2005 - 2008
John Orton Autograph	1989 - 1993
Chad Orvella Autograph	2005 - 2007
Bobo Osborne Autograph	1957 - 1963
Donovan Osborne Autograph	1992 - 2004
Keith Osik Autograph	1996 - 2005
Dan Osinski Autograph	1962 - 1970
Franquelis Osoria Autograph	2005 - 2008
Claude Osteen Autograph	1957 - 1975
Darrell Osteen Autograph	1965 - 1970
Jimmy Osting Autograph	2001 - 2002
Brian Ostrosser Autograph	1973 - 1973
Al Osuna Autograph	1990 - 1996
Antonio Osuna Autograph	1995 - 2005
Roy Oswalt Autograph	2001 - 2011
Willis Otanez Autograph	1998 - 1999
Ricky Otero Autograph	1995 - 1997
Amos Otis Autograph	1967 - 1984
Akinori Otsuka Autograph	2004 - 2007
Ed Ott Autograph	1974 - 1981
Adam Ottavino Autograph	2010 - 2010
Jim Otten Autograph	1974 - 1981
Dave Otto Autograph	1987 - 1994
Jimmy Outlaw Autograph	1937 - 1949
Josh Outman Autograph	2008 - 2011
Lyle Overbay Autograph	2001 - 2011
Mike Overy Autograph	1976 - 1976
Bob Owchinko Autograph	1976 - 1986
Dave Owen Autograph	1983 - 1988
Larry Owen Autograph	1981 - 1988
Marv Owen Autograph	1931 - 1940
Mickey Owen Autograph	1937 - 1954
Spike Owen Autograph	1983 - 1995
Eric Owens Autograph	1995 - 2003
Henry Owens Autograph	2006 - 2007
Jayhawk Owens Autograph	1993 - 1996
Jerry Owens Autograph	2006 - 2009
Micah Owings Autograph	2007 - 2011
Chris Oxspring Autograph	2005 - 2005
Ray Oyler Autograph	1965 - 1970
Pablo Ozuna Autograph	2000 - 2008
Player Name	Years Played	HOF

The player with the earliest debut date on the chart above is Joe Oeschger, who made his major league debut on April 21, 1914!

Hall of Famers in our collection from this page are non-existant (sorry). The two who were Major League players with a last name that begins with an 'O' are Jim O'Rourke & Mel Ott.

Did you know that U.S. State that starts with an 'O' that has the most ballplayers born in it is Ohio?

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