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Single-Season Leaders & Records for Win-Loss %
Baseball Leaders & Baseball Records:
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+ - Indicates Hall of Famer. Bold indicates active player.
Statistic Description: Win-Loss Percentage W / (W + L) For players, leaders need one decision for every ten team games. For managers, minimum to qualify for leading is 320 games.
Only players who finished in the top 40 for the majors in a season will appear on this list.
Leaders from the current season are only included for rate stats after July 1st.
For batting rate stats, generally a minimum of 3.1 Plate Appearances/G, 1.0 IP/G, 0.67 Gm and Chances/Team Game (fielding), 0.2 SB att/Team Game (catchers), and 0.1 SB att/Team Game (baserunners only since 1951), and 0.1 decision/G for single-season leaderboards generally needed for rate statistics. For pitcher fielding the minimums are reduced by a third. For LF, CF, RF fielding stats, we only have reliable data since 1954, so all leaders are since 1954. Explanation of min. requirements
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
|---|---|---|---|---|
| 1. | Roy Face (31) | .9474 | 1959 | R |
| 2. | Johnny Allen (32) | .9375 | 1937 | R |
| 3. | Perry Werden (22) | .9231 | 1884 | R |
| 4. | Greg Maddux (29) | .9048 | 1995 | R |
| 5. | Randy Johnson (31) | .9000 | 1995 | L |
| 6. | Ron Guidry (27) | .8929 | 1978 | L |
| 7. | Freddie Fitzsimmons (38) | .8889 | 1940 | R |
| 8. | Lefty Grove+ (31) | .8857 | 1931 | L |
| 9. | Bob Stanley (23) | .8824 | 1978 | R |
| 10. | Cliff Lee (29) | .8800 | 2008 | L |
| Preacher Roe (35) | .8800 | 1951 | L | |
| 12. | Ron Davis (23) | .8750 | 1979 | R |
| Fred Goldsmith (24) | .8750 | 1880 | R | |
| Deacon Phillippe (38) | .8750 | 1910 | R | |
| Tom Seaver+ (36) | .8750 | 1981 | R | |
| 16. | Smoky Joe Wood (22) | .8718 | 1912 | R |
| 17. | Roger Clemens (38) | .8696 | 2001 | R |
| David Cone (25) | .8696 | 1988 | R | |
| 19. | Orel Hershiser (26) | .8636 | 1985 | R |
| 20. | Bill Donovan (30) | .8621 | 1907 | R |
| Whitey Ford+ (32) | .8621 | 1961 | L | |
| 22. | Jason Bere (23) | .8571 | 1994 | R |
| Roger Clemens (23) | .8571 | 1986 | R | |
| Dwight Gooden (20) | .8571 | 1985 | R | |
| Charlie Hodnett (23) | .8571 | 1884 | ||
| Daisuke Matsuzaka (27) | .8571 | 2008 | R | |
| Harry Wheeler (20) | .8571 | 1878 | R | |
| 28. | Pedro Martinez (27) | .8519 | 1999 | R |
| 29. | Chief Bender+ (30) | .8500 | 1914 | R |
| John Smoltz (31) | .8500 | 1998 | R | |
| 31. | Lefty Grove+ (30) | .8485 | 1930 | L |
| 32. | Mike Hampton (26) | .8462 | 1999 | L |
| 33. | Sandy Consuegra (33) | .8421 | 1954 | R |
| Tom Hughes (32) | .8421 | 1916 | R | |
| Kyle Lohse (33) | .8421 | 2012 | R | |
| Ron Perranoski (27) | .8421 | 1963 | L | |
| Schoolboy Rowe (30) | .8421 | 1940 | R | |
| Ralph Terry (25) | .8421 | 1961 | R | |
| Emil Yde (24) | .8421 | 1924 | L | |
| 40. | Ian Kennedy (26) | .8400 | 2011 | R |
| 41. | Lefty Gomez+ (25) | .8387 | 1934 | L |
| 42. | Bill Hoffer (24) | .8378 | 1895 | R |
| Denny McLain (24) | .8378 | 1968 | R | |
| 44. | Walter Johnson+ (25) | .8372 | 1913 | R |
| 45. | Henry Boyle (23) | .8333 | 1884 | R |
| Spud Chandler (35) | .8333 | 1943 | R | |
| King Cole (24) | .8333 | 1910 | R | |
| Marvin Freeman (31) | .8333 | 1994 | R | |
| Randy Johnson (33) | .8333 | 1997 | L | |
| Sandy Koufax+ (27) | .8333 | 1963 | L | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Pedro Martinez (30) | .8333 | 2002 | R | |
| Hoyt Wilhelm+ (29) | .8333 | 1952 | R | |
| 53. | Old Hoss Radbourn+ (29) | .8310 | 1884 | R |
| 54. | Randy Johnson (38) | .8276 | 2002 | L |
| Justin Verlander (28) | .8276 | 2011 | R | |
| 56. | Greg Maddux (31) | .8261 | 1997 | R |
| Ed Reulbach (23) | .8261 | 1906 | R | |
| Elmer Riddle (26) | .8261 | 1941 | R | |
| 59. | Jack Chesbro+ (28) | .8235 | 1902 | R |
| Juan Guzman (26) | .8235 | 1993 | R | |
| Jim Hughes (25) | .8235 | 1899 | R | |
| Bob Moose (21) | .8235 | 1969 | R | |
| Roger Moret (25) | .8235 | 1975 | L | |
| Al Orth (26) | .8235 | 1899 | R | |
| Roy Oswalt (23) | .8235 | 2001 | R | |
| Wayne Simpson (21) | .8235 | 1970 | R | |
| Dazzy Vance+ (33) | .8235 | 1924 | R | |
| 68. | Chief Bender+ (26) | .8214 | 1910 | R |
| Bob Purkey (32) | .8214 | 1962 | R | |
| Barry Zito (24) | .8214 | 2002 | L | |
| 71. | Joe Boever (33) | .8182 | 1994 | R |
| Roger Clemens (41) | .8182 | 2004 | R | |
| Sal Maglie (33) | .8182 | 1950 | R | |
| Mark Portugal (30) | .8182 | 1993 | R | |
| Bob Welch (33) | .8182 | 1990 | R | |
| David Wells (35) | .8182 | 1998 | L | |
| 77. | Joe McGinnity+ (33) | .8140 | 1904 | R |
| 78. | Mordecai Brown+ (29) | .8125 | 1906 | R |
| Jim Coates (27) | .8125 | 1960 | R | |
| Atley Donald (28) | .8125 | 1939 | R | |
| Bob Feller+ (35) | .8125 | 1954 | R | |
| Russ Ford (27) | .8125 | 1910 | R | |
| Moose Haas (27) | .8125 | 1983 | R | |
| Al Hrabosky (25) | .8125 | 1975 | L | |
| Carl Hubbell+ (33) | .8125 | 1936 | L | |
| Tommy John (31) | .8125 | 1974 | L | |
| Howie Krist (26) | .8125 | 1942 | R | |
| Al McBean (25) | .8125 | 1963 | R | |
| Jamie Moyer (33) | .8125 | 1996 | L | |
| Eddie Plank+ (36) | .8125 | 1912 | L | |
| Rip Sewell (41) | .8125 | 1948 | R | |
| Jorge Sosa (27) | .8125 | 2005 | R | |
| Hooks Wiltse (24) | .8125 | 1904 | L | |
| 94. | Dizzy Dean+ (24) | .8108 | 1934 | R |
| 95. | Paul Abbott (33) | .8095 | 2001 | R |
| Johnny Allen (27) | .8095 | 1932 | R | |
| Chris Carpenter (34) | .8095 | 2009 | R | |
| Doc Crandall (22) | .8095 | 1910 | R | |
| Jimmy Key (33) | .8095 | 1994 | L | |
| Phil Niekro+ (43) | .8095 | 1982 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Ed Reulbach (24) | .8095 | 1907 | R | |
| Ted Wilks (28) | .8095 | 1944 | R | |
| 103. | Tiny Bonham (28) | .8077 | 1942 | R |
| Chris Carpenter (30) | .8077 | 2005 | R | |
| General Crowder (29) | .8077 | 1928 | R | |
| Catfish Hunter+ (27) | .8077 | 1973 | R | |
| Larry Jansen (26) | .8077 | 1947 | R | |
| Clayton Kershaw (23) | .8077 | 2011 | L | |
| Dave McNally (28) | .8077 | 1971 | L | |
| Bobo Newsom (32) | .8077 | 1940 | R | |
| 111. | Howie Camnitz (27) | .8065 | 1909 | R |
| Dave Ferriss (24) | .8065 | 1946 | R | |
| Juan Marichal+ (28) | .8065 | 1966 | R | |
| Christy Mathewson+ (28) | .8065 | 1909 | R | |
| 115. | Eddie Cicotte (35) | .8056 | 1919 | R |
| 116. | John Candelaria (23) | .8000 | 1977 | L |
| Stan Coveleski+ (35) | .8000 | 1925 | R | |
| Ed Doheny (28) | .8000 | 1902 | L | |
| Tommy Greene (26) | .8000 | 1993 | R | |
| Larry Gura (30) | .8000 | 1978 | L | |
| Bert Humphries (32) | .8000 | 1913 | R | |
| Sam Leever (33) | .8000 | 1905 | R | |
| Eddie Lopat (35) | .8000 | 1953 | L | |
| Firpo Marberry (32) | .8000 | 1931 | R | |
| Denny Neagle (28) | .8000 | 1997 | L | |
| Don Newcombe (29) | .8000 | 1955 | R | |
| Ivan Nova (24) | .8000 | 2011 | R | |
| Jim Palmer+ (23) | .8000 | 1969 | R | |
| Brad Penny (29) | .8000 | 2007 | R | |
| David Price (26) | .8000 | 2012 | L | |
| Robin Roberts+ (25) | .8000 | 1952 | R | |
| Jered Weaver (29) | .8000 | 2012 | R | |
| Mickey Welch+ (25) | .8000 | 1885 | R | |
| 134. | Al Spalding+ (25) | .7966 | 1876 | R |
| 135. | Don Newcombe (30) | .7941 | 1956 | R |
| 136. | Jocko Flynn (22) | .7931 | 1886 | R |
| Ellis Kinder (34) | .7931 | 1949 | R | |
| Sal Maglie (34) | .7931 | 1951 | R | |
| Bret Saberhagen (25) | .7931 | 1989 | R | |
| 140. | Wally Bunker (19) | .7917 | 1964 | R |
| Shawn Estes (24) | .7917 | 1997 | L | |
| Felix Hernandez (23) | .7917 | 2009 | R | |
| Sandy Koufax+ (28) | .7917 | 1964 | L | |
| Dutch Leonard (22) | .7917 | 1914 | L | |
| 145. | Joe Black (28) | .7895 | 1952 | R |
| Hank Borowy (26) | .7895 | 1942 | R | |
| Harry Brecheen (30) | .7895 | 1945 | L | |
| Larry French (34) | .7895 | 1942 | L | |
| Lefty Grove+ (39) | .7895 | 1939 | L | |
| Don Gullett (24) | .7895 | 1975 | L | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Red Lucas (34) | .7895 | 1936 | R | |
| Roy Mahaffey (27) | .7895 | 1931 | R | |
| Wade Miller (25) | .7895 | 2002 | R | |
| 154. | Bullet Joe Bush (29) | .7879 | 1922 | R |
| Bill James (22) | .7879 | 1914 | R | |
| Fred Klobedanz (26) | .7879 | 1897 | L | |
| 157. | Mark Clark (26) | .7857 | 1994 | R |
| Doug Drabek (27) | .7857 | 1990 | R | |
| Tom Glavine (27) | .7857 | 1993 | L | |
| Ron Guidry (34) | .7857 | 1985 | L | |
| Tex Hughson (26) | .7857 | 1942 | R | |
| Jouett Meekin (27) | .7857 | 1894 | R | |
| Curt Schilling (34) | .7857 | 2001 | R | |
| Lon Warneke (23) | .7857 | 1932 | R | |
| 165. | Bob Caruthers (25) | .7843 | 1889 | R |
| 166. | George Mullin (28) | .7838 | 1909 | R |
| 167. | Bill Bernhard (31) | .7826 | 1902 | R |
| Tom Browning (28) | .7826 | 1988 | L | |
| Bartolo Colon (26) | .7826 | 1999 | R | |
| Tex Hughson (28) | .7826 | 1944 | R | |
| Jack Kramer (30) | .7826 | 1948 | R | |
| Cliff Lee (26) | .7826 | 2005 | L | |
| Tim Lincecum (24) | .7826 | 2008 | R | |
| Jack Manning (22) | .7826 | 1876 | R | |
| Mike Mussina (23) | .7826 | 1992 | R | |
| Bob Ojeda (28) | .7826 | 1986 | L | |
| Johnny Podres (28) | .7826 | 1961 | L | |
| Bryn Smith (29) | .7826 | 1985 | R | |
| 179. | Paul Derringer (32) | .7812 | 1939 | R |
| Bill Hoffer (25) | .7812 | 1896 | R | |
| Sam Leever (31) | .7812 | 1903 | R | |
| Mel Parnell (27) | .7812 | 1949 | L | |
| Tom Seaver+ (24) | .7812 | 1969 | R | |
| Steve Stone (32) | .7812 | 1980 | R | |
| 185. | Johnny Beazley (24) | .7778 | 1942 | R |
| Bob Caruthers (20) | .7778 | 1884 | R | |
| Roger Clemens (27) | .7778 | 1990 | R | |
| Russ Ford (31) | .7778 | 1914 | R | |
| Lefty Grove+ (38) | .7778 | 1938 | L | |
| Don Gullett (26) | .7778 | 1977 | L | |
| Bump Hadley (31) | .7778 | 1936 | R | |
| Randy Johnson (37) | .7778 | 2001 | L | |
| Ed Klepfer (29) | .7778 | 1917 | R | |
| Ray Kolp (27) | .7778 | 1922 | R | |
| Mat Latos (24) | .7778 | 2012 | R | |
| Pedro Martinez (31) | .7778 | 2003 | R | |
| Joe McGinnity+ (29) | .7778 | 1900 | R | |
| Bobby Mitchell (22) | .7778 | 1878 | L | |
| John Montefusco (33) | .7778 | 1983 | R | |
| Jack Morris (37) | .7778 | 1992 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Art Nehf (31) | .7778 | 1924 | L | |
| Gaylord Perry+ (39) | .7778 | 1978 | R | |
| Bret Saberhagen (30) | .7778 | 1994 | R | |
| Curt Schilling (37) | .7778 | 2004 | R | |
| Tom Seaver+ (32) | .7778 | 1977 | R | |
| Pete Vuckovich (28) | .7778 | 1981 | R | |
| Bob Welch (28) | .7778 | 1985 | R | |
| Bob Wickman (24) | .7778 | 1993 | R | |
| Cy Young+ (28) | .7778 | 1895 | R | |
| 210. | Jack Coombs (27) | .7750 | 1910 | R |
| Christy Mathewson+ (24) | .7750 | 1905 | R | |
| 212. | Whitey Ford+ (34) | .7742 | 1963 | L |
| Lefty Gomez+ (23) | .7742 | 1932 | L | |
| Clark Griffith+ (31) | .7742 | 1901 | R | |
| Rube Marquard+ (24) | .7742 | 1911 | L | |
| Ed Reulbach (25) | .7742 | 1908 | R | |
| Jack Sanford (33) | .7742 | 1962 | R | |
| Bobby Shantz (26) | .7742 | 1952 | L | |
| Frank Viola (28) | .7742 | 1988 | L | |
| Rube Waddell+ (25) | .7742 | 1902 | L | |
| 221. | Jack Chesbro+ (30) | .7736 | 1904 | R |
| 222. | Chief Bender+ (27) | .7727 | 1911 | R |
| Bert Blyleven+ (38) | .7727 | 1989 | R | |
| Bill Campbell (27) | .7727 | 1976 | R | |
| Jamie Moyer (34) | .7727 | 1997 | L | |
| Charles Nagy (29) | .7727 | 1996 | R | |
| CC Sabathia (20) | .7727 | 2001 | L | |
| Jason Schmidt (30) | .7727 | 2003 | R | |
| 229. | Dolf Luque (32) | .7714 | 1923 | R |
| Vic Willis+ (23) | .7714 | 1899 | R | |
| 231. | Christy Mathewson+ (27) | .7708 | 1908 | R |
| 232. | Mordecai Brown+ (30) | .7692 | 1907 | R |
| John Clarkson+ (22) | .7692 | 1884 | R | |
| Roger Clemens (35) | .7692 | 1998 | R | |
| R.A. Dickey (37) | .7692 | 2012 | R | |
| Carl Erskine (26) | .7692 | 1953 | R | |
| Charlie Ferguson (23) | .7692 | 1886 | R | |
| Tom Glavine (32) | .7692 | 1998 | L | |
| Bob Grim (24) | .7692 | 1954 | R | |
| Lefty Grove+ (29) | .7692 | 1929 | L | |
| Tim Hudson (24) | .7692 | 2000 | R | |
| Ray Kremer (33) | .7692 | 1926 | R | |
| Bill Lee (25) | .7692 | 1935 | R | |
| Jon Lieber (31) | .7692 | 2001 | R | |
| Ramon Martinez (22) | .7692 | 1990 | R | |
| Andy Messersmith (28) | .7692 | 1974 | R | |
| Jamie Moyer (38) | .7692 | 2001 | L | |
| Jerry Nops (22) | .7692 | 1897 | L | |
| Jim Perry (33) | .7692 | 1969 | R | |
| Bret Saberhagen (21) | .7692 | 1985 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Johan Santana (25) | .7692 | 2004 | L | |
| Rick Sutcliffe (28) | .7692 | 1984 | R | |
| Jesse Tannehill (25) | .7692 | 1900 | L | |
| Jesse Tannehill (27) | .7692 | 1902 | L | |
| Mike Torrez (34) | .7692 | 1981 | R | |
| Will White (27) | .7692 | 1882 | R | |
| 257. | John Clarkson+ (23) | .7681 | 1885 | R |
| 258. | Cy Young+ (34) | .7674 | 1901 | R |
| 259. | Bob Gibson+ (34) | .7667 | 1970 | R |
| Vean Gregg (26) | .7667 | 1911 | L | |
| Waite Hoyt+ (28) | .7667 | 1928 | R | |
| Walter Johnson+ (36) | .7667 | 1924 | R | |
| Bob Lemon+ (33) | .7667 | 1954 | R | |
| Jim Maloney (23) | .7667 | 1963 | R | |
| Orval Overall (26) | .7667 | 1907 | R | |
| Curt Schilling (35) | .7667 | 2002 | R | |
| Warren Spahn+ (32) | .7667 | 1953 | L | |
| Warren Spahn+ (42) | .7667 | 1963 | L | |
| 269. | Earl Caldwell (41) | .7647 | 1946 | R |
| Steve Carlton+ (36) | .7647 | 1981 | L | |
| Danny Darwin (24) | .7647 | 1980 | R | |
| Al Demaree (28) | .7647 | 1913 | R | |
| Jesse Haines+ (32) | .7647 | 1926 | R | |
| Ken Holloway (27) | .7647 | 1925 | R | |
| Tommy Hunter (23) | .7647 | 2010 | R | |
| Sandy Koufax+ (29) | .7647 | 1965 | L | |
| Ted Lewis (25) | .7647 | 1898 | R | |
| Bob Muncrief (29) | .7647 | 1945 | R | |
| Johnny Murphy (28) | .7647 | 1937 | R | |
| Allie Reynolds (37) | .7647 | 1954 | R | |
| 281. | Lady Baldwin (27) | .7636 | 1886 | L |
| 282. | Mordecai Brown+ (31) | .7632 | 1908 | R |
| Charlie Buffinton (30) | .7632 | 1891 | R | |
| Bob Caruthers (23) | .7632 | 1887 | R | |
| Hal Newhouser+ (23) | .7632 | 1944 | L | |
| 286. | Jack Bentley (29) | .7619 | 1924 | L |
| Harry Brecheen (29) | .7619 | 1944 | L | |
| Tommy Byrne (35) | .7619 | 1955 | L | |
| Matt Cain (27) | .7619 | 2012 | R | |
| Spud Chandler (34) | .7619 | 1942 | R | |
| David Cone (31) | .7619 | 1994 | R | |
| Juan Guzman (25) | .7619 | 1992 | R | |
| Roy Halladay (29) | .7619 | 2006 | R | |
| Ken Hill (28) | .7619 | 1994 | R | |
| Derek Holland (24) | .7619 | 2011 | L | |
| Sad Sam Jones (25) | .7619 | 1918 | R | |
| Red Munger (28) | .7619 | 1947 | R | |
| Mike Mussina (25) | .7619 | 1994 | R | |
| Rosy Ryan (25) | .7619 | 1923 | R | |
| Rip Sewell (33) | .7619 | 1940 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Bob Tewksbury (31) | .7619 | 1992 | R | |
| 302. | Jim Bibby (35) | .7600 | 1980 | R |
| Larry Christenson (23) | .7600 | 1977 | R | |
| John Denny (30) | .7600 | 1983 | R | |
| Bill Doak (23) | .7600 | 1914 | R | |
| Whitey Ford+ (27) | .7600 | 1956 | L | |
| Roy Halladay (34) | .7600 | 2011 | R | |
| Jake Peavy (26) | .7600 | 2007 | R | |
| Herb Pennock+ (29) | .7600 | 1923 | L | |
| Eddie Plank+ (30) | .7600 | 1906 | L | |
| David Price (24) | .7600 | 2010 | L | |
| Charlie Root (30) | .7600 | 1929 | R | |
| Dutch Ruether (25) | .7600 | 1919 | L | |
| Johan Santana (27) | .7600 | 2006 | L | |
| Chien-Ming Wang (26) | .7600 | 2006 | R | |
| 316. | John Burkett (28) | .7586 | 1993 | R |
| Mort Cooper (29) | .7586 | 1942 | R | |
| Mort Cooper (31) | .7586 | 1944 | R | |
| Richard Dotson (24) | .7586 | 1983 | R | |
| Roy Halladay (26) | .7586 | 2003 | R | |
| Waite Hoyt+ (27) | .7586 | 1927 | R | |
| Sam Leever (34) | .7586 | 1906 | R | |
| Brandon Webb (29) | .7586 | 2008 | R | |
| 324. | Juan Marichal+ (25) | .7576 | 1963 | R |
| Sadie McMahon (26) | .7576 | 1894 | R | |
| 326. | Cy Young+ (36) | .7568 | 1903 | R |
| 327. | Pete Alexander+ (28) | .7561 | 1915 | R |
| 328. | George Haddock (24) | .7556 | 1891 | R |
| 329. | Bob Caruthers (21) | .7547 | 1885 | R |
| 330. | Larry Corcoran (20) | .7544 | 1880 | R |
| 331. | Johnny Antonelli (24) | .7500 | 1954 | L |
| Luis Arroyo (34) | .7500 | 1961 | L | |
| Steve Avery (23) | .7500 | 1993 | L | |
| Jim Bibby (34) | .7500 | 1979 | R | |
| Steve Blass (26) | .7500 | 1968 | R | |
| Vida Blue (21) | .7500 | 1971 | L | |
| Hank Borowy (29) | .7500 | 1945 | R | |
| Jim Bouton (24) | .7500 | 1963 | R | |
| Mordecai Brown+ (32) | .7500 | 1909 | R | |
| Charlie Buffinton (23) | .7500 | 1884 | R | |
| Lew Burdette (26) | .7500 | 1953 | R | |
| Rick Camp (28) | .7500 | 1981 | R | |
| Chris Carpenter (29) | .7500 | 2004 | R | |
| Roger Clemens (34) | .7500 | 1997 | R | |
| Joe Corbett (21) | .7500 | 1897 | R | |
| Doc Crandall (23) | .7500 | 1911 | R | |
| Mike Cuellar (33) | .7500 | 1970 | L | |
| Chuck Dobson (27) | .7500 | 1971 | R | |
| George Earnshaw (29) | .7500 | 1929 | R | |
| George Earnshaw (31) | .7500 | 1931 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Mike Flanagan (31) | .7500 | 1983 | L | |
| Whitey Ford+ (24) | .7500 | 1953 | L | |
| Freddy Garcia (24) | .7500 | 2001 | R | |
| Hank Gastright (28) | .7500 | 1893 | R | |
| Lefty Gomez+ (32) | .7500 | 1941 | L | |
| Mudcat Grant (29) | .7500 | 1965 | R | |
| Zack Greinke (28) | .7500 | 2012 | R | |
| Lefty Grove+ (28) | .7500 | 1928 | L | |
| Lefty Grove+ (33) | .7500 | 1933 | L | |
| Roy Halladay (28) | .7500 | 2005 | R | |
| Cole Hamels (23) | .7500 | 2007 | L | |
| Erik Hanson (30) | .7500 | 1995 | R | |
| J.A. Happ (26) | .7500 | 2009 | L | |
| Orlando Hernandez (32) | .7500 | 1998 | R | |
| Joe Hesketh (32) | .7500 | 1991 | L | |
| LaMarr Hoyt (26) | .7500 | 1981 | R | |
| Catfish Hunter+ (26) | .7500 | 1972 | R | |
| Bruce Hurst (30) | .7500 | 1988 | L | |
| Josh Johnson (25) | .7500 | 2009 | R | |
| Jimmy Key (32) | .7500 | 1993 | L | |
| Eric King (26) | .7500 | 1990 | R | |
| Sandy Koufax+ (30) | .7500 | 1966 | L | |
| Eddie Lopat (36) | .7500 | 1954 | L | |
| Pat Malone (33) | .7500 | 1936 | R | |
| Firpo Marberry (31) | .7500 | 1930 | R | |
| Firpo Marberry (35) | .7500 | 1934 | R | |
| Pedro Martinez (28) | .7500 | 2000 | R | |
| Christy Mathewson+ (29) | .7500 | 1910 | R | |
| Rudy May (35) | .7500 | 1980 | L | |
| Carl Mays (29) | .7500 | 1921 | R | |
| Jim McCormick (28) | .7500 | 1885 | R | |
| Lindy McDaniel (24) | .7500 | 1960 | R | |
| Russ Meyer (29) | .7500 | 1953 | R | |
| Jamie Moyer (40) | .7500 | 2003 | L | |
| Johnny Murphy (34) | .7500 | 1943 | R | |
| Joe Nathan (28) | .7500 | 2003 | R | |
| Gary Nolan (24) | .7500 | 1972 | R | |
| Fred Norman (32) | .7500 | 1975 | L | |
| Russ Ortiz (29) | .7500 | 2003 | R | |
| Jim Palmer+ (36) | .7500 | 1982 | R | |
| Jeff Parrett (26) | .7500 | 1988 | R | |
| Glen Perkins (25) | .7500 | 2008 | L | |
| Ed Poole (27) | .7500 | 1902 | R | |
| Mark Prior (22) | .7500 | 2003 | R | |
| Horacio Ramirez (23) | .7500 | 2003 | L | |
| Dennis Rasmussen (27) | .7500 | 1986 | L | |
| Jerry Reuss (31) | .7500 | 1980 | L | |
| Schoolboy Rowe (24) | .7500 | 1934 | R | |
| Red Ruffing+ (33) | .7500 | 1938 | R | |
| Red Ruffing+ (34) | .7500 | 1939 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Vern Ruhle (29) | .7500 | 1980 | R | |
| Reb Russell (28) | .7500 | 1917 | L | |
| CC Sabathia (29) | .7500 | 2010 | L | |
| Slim Sallee (34) | .7500 | 1919 | L | |
| Jose Santiago (26) | .7500 | 1967 | R | |
| Ferdie Schupp (26) | .7500 | 1917 | L | |
| Aaron Sele (31) | .7500 | 2001 | R | |
| Bob Shaw (26) | .7500 | 1959 | R | |
| Urban Shocker (36) | .7500 | 1927 | R | |
| Bill Shores (26) | .7500 | 1930 | R | |
| John Smoltz (29) | .7500 | 1996 | R | |
| Dave Stieb (32) | .7500 | 1990 | R | |
| Monty Stratton (25) | .7500 | 1937 | R | |
| Mike Sullivan (25) | .7500 | 1892 | R | |
| John Tudor (36) | .7500 | 1990 | L | |
| Bob Turley (27) | .7500 | 1958 | R | |
| Russ Van Atta (27) | .7500 | 1933 | L | |
| Justin Verlander (24) | .7500 | 2007 | R | |
| Pete Vuckovich (29) | .7500 | 1982 | R | |
| Bill Walker (30) | .7500 | 1934 | L | |
| Jarrod Washburn (27) | .7500 | 2002 | L | |
| Doc White (27) | .7500 | 1906 | L | |
| Hoyt Wilhelm+ (31) | .7500 | 1954 | R | |
| Smoky Joe Wood (25) | .7500 | 1915 | R | |
| Cy Young+ (25) | .7500 | 1892 | R | |
| 426. | Tim Keefe+ (31) | .7447 | 1888 | R |
| 427. | Cy Young+ (35) | .7442 | 1902 | R |
| 428. | Claude Hendrix (25) | .7436 | 1914 | R |
| 429. | Juan Marichal+ (30) | .7429 | 1968 | R |
| Hal Newhouser+ (25) | .7429 | 1946 | L | |
| 431. | Noodles Hahn (20) | .7419 | 1899 | L |
| Orel Hershiser (29) | .7419 | 1988 | R | |
| Danny Jackson (26) | .7419 | 1988 | L | |
| Nick Maddox (21) | .7419 | 1908 | R | |
| Eddie Plank+ (35) | .7419 | 1911 | L | |
| Bucky Walters (35) | .7419 | 1944 | R | |
| 437. | Gene Bearden (27) | .7407 | 1948 | L |
| Josh Beckett (27) | .7407 | 2007 | R | |
| Harry Brecheen (33) | .7407 | 1948 | L | |
| Steve Carlton+ (31) | .7407 | 1976 | L | |
| David Cone (35) | .7407 | 1998 | R | |
| Bob Forsch (27) | .7407 | 1977 | R | |
| Wayne Garland (25) | .7407 | 1976 | R | |
| Rick Helling (27) | .7407 | 1998 | R | |
| Claude Hendrix (29) | .7407 | 1918 | R | |
| Tom Hughes (24) | .7407 | 1903 | R | |
| Walter Johnson+ (37) | .7407 | 1925 | R | |
| Tommy John (34) | .7407 | 1977 | L | |
| Al Maul (32) | .7407 | 1898 | R | |
| Dave McNally (26) | .7407 | 1969 | L | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Flint Rhem (25) | .7407 | 1926 | R | |
| Red Ruffing+ (32) | .7407 | 1937 | R | |
| 453. | Doyle Alexander (33) | .7391 | 1984 | R |
| Josh Beckett (29) | .7391 | 2009 | R | |
| Ryan Dempster (31) | .7391 | 2008 | R | |
| Whitey Ford+ (35) | .7391 | 1964 | L | |
| Dwight Gooden (21) | .7391 | 1986 | R | |
| Cole Hamels (28) | .7391 | 2012 | L | |
| Al Leiter (32) | .7391 | 1998 | L | |
| Carl Lundgren (26) | .7391 | 1906 | R | |
| Herb Pennock+ (34) | .7391 | 1928 | L | |
| Jack Pfiester (31) | .7391 | 1909 | L | |
| Allie Reynolds (32) | .7391 | 1949 | R | |
| Fred Toney (26) | .7391 | 1915 | R | |
| Edinson Volquez (24) | .7391 | 2008 | R | |
| 466. | Jim McCormick (29) | .7381 | 1886 | R |
| Kid Nichols+ (27) | .7381 | 1897 | R | |
| 468. | Babe Adams (39) | .7368 | 1921 | R |
| Bill Bernhard (32) | .7368 | 1903 | R | |
| Dick Bosman (25) | .7368 | 1969 | R | |
| Nelson Briles (23) | .7368 | 1967 | R | |
| Mike Caldwell (25) | .7368 | 1974 | L | |
| Spud Chandler (30) | .7368 | 1938 | R | |
| Eddie Cicotte (25) | .7368 | 1909 | R | |
| Duke Esper (28) | .7368 | 1896 | L | |
| Sid Fernandez (26) | .7368 | 1989 | L | |
| Wes Ferrell (26) | .7368 | 1934 | R | |
| Ray Fisher (31) | .7368 | 1919 | R | |
| Hersh Freeman (27) | .7368 | 1956 | R | |
| Mike Garcia (25) | .7368 | 1949 | R | |
| Scott Garrelts (27) | .7368 | 1989 | R | |
| Whitey Glazner (27) | .7368 | 1921 | R | |
| Bob Knepper (34) | .7368 | 1988 | L | |
| John Lackey (26) | .7368 | 2005 | R | |
| Sam Leever (29) | .7368 | 1901 | R | |
| Bill Lohrman (29) | .7368 | 1942 | R | |
| Dennis Martinez (26) | .7368 | 1981 | R | |
| Stu Miller (33) | .7368 | 1961 | R | |
| Amos Rusie+ (26) | .7368 | 1897 | R | |
| Spec Shea (26) | .7368 | 1947 | R | |
| Clyde Shoun (31) | .7368 | 1943 | L | |
| Whit Wyatt (35) | .7368 | 1943 | R | |
| 493. | Jesse Barnes (26) | .7353 | 1919 | R |
| Larry Benton (30) | .7353 | 1928 | R | |
| Don Drysdale+ (25) | .7353 | 1962 | R | |
| Hal Newhouser+ (24) | .7353 | 1945 | L | |
| Deacon Phillippe (31) | .7353 | 1903 | R | |
| 498. | Amos Rusie+ (23) | .7347 | 1894 | R |
| 499. | Pete Alexander+ (26) | .7333 | 1913 | R |
| Pete Alexander+ (29) | .7333 | 1916 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | Throws |
| Red Ames (22) | .7333 | 1905 | R | |
| Ewell Blackwell (24) | .7333 | 1947 | R | |
| Bob Feller+ (32) | .7333 | 1951 | R | |
| Carl Hubbell+ (34) | .7333 | 1937 | L | |
| Walter Johnson+ (24) | .7333 | 1912 | R | |
| Christy Mathewson+ (23) | .7333 | 1904 | R | |
| Matt Morris (26) | .7333 | 2001 | R | |
| Tip O'Neill (26) | .7333 | 1884 | R | |
| Tully Sparks (32) | .7333 | 1907 | R | |
| Jack Stivetts (29) | .7333 | 1897 | R | |
| Earl Whitehill (34) | .7333 | 1933 | L |
Baseball Leaders & Baseball Records:
Single-Season
Career
Active
Progressive
Year-by-Year Top-Tens
Yearly League
Note that seasons prior to 1876 are not included in single-season marks, but are included in career marks.
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Win
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Total Zone Rating and Wins above Replacement calculations
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Full-year
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