Single-Season Leaders & Records for Win-Loss %
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| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
|---|---|---|---|---|---|
| 1. | Ted Alexander (31) | 1.0000 | 1944 | 12.1 | R |
| Dan Bankhead (24) | 1.0000 | 1944 | 9.2 | R | |
| Eugene Bremer (29) | 1.0000 | 1946 | 33.2 | R | |
| Ray Brown+ (30) | 1.0000 | 1938 | 129.0 | R | |
| Webbo Clarke (19) | 1.0000 | 1947 | 36.0 | L | |
| Roosevelt Davis (23) | 1.0000 | 1928 | 98.0 | R | |
| Willie Ferrell (27) | 1.0000 | 1941 | 29.2 | L | |
| Max Fried (26) | 1.0000 | 2020 | 56.0 | L | |
| Jay Heard (26) | 1.0000 | 1946 | 18.0 | L | |
| Willie Hutchinson (26) | 1.0000 | 1941 | 24.1 | R | |
| Connie Johnson (19) | 1.0000 | 1942 | 30.1 | R | |
| Johnny Markham (28) | 1.0000 | 1937 | 47.2 | R | |
| Leroy Matlock (28) | 1.0000 | 1935 | 71.0 | L | |
| Willie McCrary | 1.0000 | 1944 | 11.1 | R | |
| Gready McKinnis (27) | 1.0000 | 1941 | 34.2 | L | |
| Satchel Paige+ (39) | 1.0000 | 1946 | 35.0 | R | |
| Bill Powell (28) | 1.0000 | 1947 | 24.0 | R | |
| Gene Richardson (19) | 1.0000 | 1947 | 27.0 | L | |
| Bill Ricks (28) | 1.0000 | 1948 | 52.0 | R | |
| Specs Roberts (31) | 1.0000 | 1939 | 45.0 | R | |
| Ford Smith (22) | 1.0000 | 1941 | 26.2 | R | |
| Hilton Smith+ (34) | 1.0000 | 1941 | 83.1 | R | |
| Herb Thomas (18) | 1.0000 | 1928 | 37.0 | L | |
| Luis Tiant (40) | 1.0000 | 1947 | 79.2 | L | |
| Edsall Walker (27) | 1.0000 | 1938 | 74.2 | L | |
| Roy Welmaker (23) | 1.0000 | 1937 | 39.0 | L | |
| Roy Welmaker (30) | 1.0000 | 1944 | 39.1 | L | |
| Lefty Williams (37) | 1.0000 | 1932 | 51.2 | L | |
| Johnny Wright (24) | 1.0000 | 1941 | 45.2 | R | |
| Johnny Wright (28) | 1.0000 | 1945 | 45.2 | R | |
| 31. | Roy Face (31) | .9474 | 1959 | 93.1 | R |
| Connie Rector (37) | .9474 | 1929 | 188.0 | R | |
| 33. | Tony Gonsolin (28) | .9412 | 2022 | 130.1 | R |
| 34. | Johnny Allen (32) | .9375 | 1937 | 173.0 | R |
| 35. | Chet Brewer (19) | .9231 | 1926 | 121.1 | R |
| Perry Werden (22) | .9231 | 1884 | 141.1 | R | |
| 37. | Rube Curry (26) | .9167 | 1925 | 128.0 | R |
| 38. | Ray Brown+ (36) | .9091 | 1944 | 127.1 | R |
| Phil Cockrell (29) | .9091 | 1924 | 110.0 | R | |
| 40. | Greg Maddux+ (29) | .9048 | 1995 | 209.2 | R |
| 41. | Willie Cornelius (31) | .9000 | 1938 | 102.0 | R |
| Randy Johnson+ (31) | .9000 | 1995 | 214.1 | L | |
| Tom Williams (26) | .9000 | 1923 | 94.0 | R | |
| 44. | Dave Brown (24) | .8947 | 1921 | 180.1 | L |
| Ray Brown+ (32) | .8947 | 1940 | 165.1 | R | |
| 46. | Ron Guidry (27) | .8929 | 1978 | 273.2 | L |
| 47. | Shane Bieber (25) | .8889 | 2020 | 77.1 | R |
| Wilmer Fields (23) | .8889 | 1946 | 78.2 | R | |
| Freddie Fitzsimmons (38) | .8889 | 1940 | 134.1 | R | |
| Smoky Owens (27) | .8889 | 1939 | 66.1 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| George Walker (24) | .8889 | 1939 | 90.2 | R | |
| 52. | Lefty Grove+ (31) | .8857 | 1931 | 288.2 | L |
| 53. | Chet Brewer (22) | .8824 | 1929 | 149.0 | R |
| Bullet Rogan+ (31) | .8824 | 1925 | 155.1 | R | |
| Aaron Sanchez (23) | .8824 | 2016 | 192.0 | R | |
| Bob Stanley (23) | .8824 | 1978 | 141.2 | R | |
| 57. | Cliff Lee (29) | .8800 | 2008 | 223.1 | L |
| Preacher Roe (35) | .8800 | 1951 | 257.2 | L | |
| 59. | Dan Bankhead (21) | .8750 | 1941 | 69.1 | R |
| Eugene Bremer (28) | .8750 | 1945 | 68.0 | R | |
| Spoon Carter (40) | .8750 | 1943 | 120.0 | R | |
| Ron Davis (23) | .8750 | 1979 | 85.1 | R | |
| Bill Foster+ (20) | .8750 | 1924 | 66.2 | L | |
| Fred Goldsmith (24) | .8750 | 1880 | 210.1 | R | |
| Clayton Kershaw (26) | .8750 | 2014 | 198.1 | L | |
| Henry McHenry (28) | .8750 | 1938 | 116.0 | R | |
| Tom Parker (25) | .8750 | 1937 | 60.0 | R | |
| Deacon Phillippe (38) | .8750 | 1910 | 121.2 | R | |
| Max Scherzer (28) | .8750 | 2013 | 214.1 | R | |
| Tom Seaver+ (36) | .8750 | 1981 | 166.1 | R | |
| Edsall Walker (26) | .8750 | 1937 | 74.1 | L | |
| 72. | Smoky Joe Wood (22) | .8718 | 1912 | 344.0 | R |
| 73. | Roger Clemens (38) | .8696 | 2001 | 220.1 | R |
| David Cone (25) | .8696 | 1988 | 231.1 | R | |
| Julio Urías (24) | .8696 | 2021 | 185.2 | L | |
| 76. | Leon Day+ (29) | .8667 | 1946 | 132.0 | R |
| Tom Johnson (31) | .8667 | 1920 | 148.2 | R | |
| 78. | Zack Greinke (31) | .8636 | 2015 | 222.2 | R |
| Orel Hershiser (26) | .8636 | 1985 | 239.2 | R | |
| Ted Trent (24) | .8636 | 1928 | 187.0 | R | |
| 81. | Bill Donovan (30) | .8621 | 1907 | 271.0 | R |
| Whitey Ford+ (32) | .8621 | 1961 | 283.0 | L | |
| 83. | Jason Bere (23) | .8571 | 1994 | 141.2 | R |
| Ray Brown+ (35) | .8571 | 1943 | 74.2 | R | |
| Roger Clemens (23) | .8571 | 1986 | 254.0 | R | |
| Andy Cooper+ (28) | .8571 | 1925 | 146.2 | L | |
| Wilmer Fields (25) | .8571 | 1948 | 56.0 | R | |
| Matt Foster (25) | .8571 | 2020 | 28.2 | R | |
| Dwight Gooden (20) | .8571 | 1985 | 276.2 | R | |
| Charlie Hodnett (24) | .8571 | 1884 | 121.0 | ||
| Leniel Hooker (23) | .8571 | 1942 | 95.2 | R | |
| Kenta Maeda (32) | .8571 | 2020 | 66.2 | R | |
| Daisuke Matsuzaka (27) | .8571 | 2008 | 167.2 | R | |
| José Méndez+ (39) | .8571 | 1924 | 45.1 | R | |
| Andy Porter (27) | .8571 | 1938 | 59.0 | R | |
| Ted Radcliffe (36) | .8571 | 1939 | 60.1 | R | |
| Sam Streeter (34) | .8571 | 1935 | 61.2 | L | |
| Harry Wheeler (20) | .8571 | 1878 | 62.0 | R | |
| Johnny Wright (26) | .8571 | 1943 | 181.0 | R | |
| 100. | Pedro Martinez+ (27) | .8519 | 1999 | 213.1 | R |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| 101. | Charles Bender+ (30) | .8500 | 1914 | 179.0 | R |
| John Smoltz+ (31) | .8500 | 1998 | 167.2 | R | |
| 103. | Lefty Grove+ (30) | .8485 | 1930 | 291.0 | L |
| 104. | Phil Cockrell (30) | .8462 | 1925 | 125.2 | R |
| Charles Corbett (35) | .8462 | 1925 | 107.0 | R | |
| Mike Hampton (26) | .8462 | 1999 | 239.0 | L | |
| Max Manning (27) | .8462 | 1946 | 120.1 | R | |
| Dick Matthews | .8462 | 1932 | 116.1 | ||
| Rick Porcello (27) | .8462 | 2016 | 223.0 | R | |
| Roy Welmaker (31) | .8462 | 1945 | 126.2 | L | |
| 111. | Sandy Consuegra (33) | .8421 | 1954 | 154.0 | R |
| Tom Hughes (32) | .8421 | 1916 | 161.0 | R | |
| Kyle Lohse (33) | .8421 | 2012 | 211.0 | R | |
| Ron Perranoski (27) | .8421 | 1963 | 129.0 | L | |
| Schoolboy Rowe (30) | .8421 | 1940 | 169.0 | R | |
| Ralph Terry (25) | .8421 | 1961 | 188.1 | R | |
| Alex Wood (26) | .8421 | 2017 | 152.1 | L | |
| Emil Yde (24) | .8421 | 1924 | 194.0 | L | |
| 119. | Ian Kennedy (26) | .8400 | 2011 | 222.0 | R |
| 120. | Lefty Gomez+ (25) | .8387 | 1934 | 281.2 | L |
| 121. | Bill Hoffer (24) | .8378 | 1895 | 314.0 | R |
| Denny McLain (24) | .8378 | 1968 | 336.0 | R | |
| 123. | Walter Johnson+ (25) | .8372 | 1913 | 346.0 | R |
| 124. | Caleb Baragar (26) | .8333 | 2020 | 22.1 | L |
| Garnett Blair (23) | .8333 | 1945 | 47.0 | R | |
| Henry Boyle (23) | .8333 | 1884 | 150.0 | R | |
| Eugene Bremer (25) | .8333 | 1942 | 52.2 | R | |
| Spud Chandler (35) | .8333 | 1943 | 253.0 | R | |
| King Cole (24) | .8333 | 1910 | 239.2 | R | |
| Roosevelt Davis (30) | .8333 | 1935 | 86.0 | R | |
| Marvin Freeman (31) | .8333 | 1994 | 112.2 | R | |
| Tyler Glasnow (26) | .8333 | 2020 | 57.1 | R | |
| J.A. Happ (33) | .8333 | 2016 | 195.0 | L | |
| Jonathan Hernández (23) | .8333 | 2020 | 31.0 | R | |
| Jimmy Hill (21) | .8333 | 1939 | 57.0 | L | |
| Bert Hunter (21) | .8333 | 1932 | 101.4 | R | |
| Randy Johnson+ (33) | .8333 | 1997 | 213.0 | L | |
| Slim Jones (21) | .8333 | 1934 | 203.0 | L | |
| Sandy Koufax+ (27) | .8333 | 1963 | 311.0 | L | |
| Johnny Markham (34) | .8333 | 1943 | 49.0 | R | |
| Pedro Martinez+ (30) | .8333 | 2002 | 199.1 | R | |
| Jack Matchett (34) | .8333 | 1942 | 51.2 | R | |
| Booker McDaniel (28) | .8333 | 1942 | 59.0 | R | |
| Eddie Miller (23) | .8333 | 1924 | 114.0 | R | |
| Charlie Morton (34) | .8333 | 2018 | 167.0 | R | |
| Roy Parnell (28) | .8333 | 1932 | 54.0 | R | |
| Bill Powell (29) | .8333 | 1948 | 51.2 | R | |
| Old Hoss Radbourn+ (29) | .8333 | 1884 | 678.2 | R | |
| Ted Radcliffe (27) | .8333 | 1930 | 115.1 | R | |
| Tom Richardson (28) | .8333 | 1933 | 65.1 | ||
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Ed Rile (24) | .8333 | 1924 | 59.0 | R | |
| Bullet Rogan+ (34) | .8333 | 1928 | 114.0 | R | |
| R.T. Walker (32) | .8333 | 1947 | 53.2 | R | |
| Hoyt Wilhelm+ (29) | .8333 | 1952 | 159.1 | R | |
| Joe Williams+ (46) | .8333 | 1932 | 76.0 | R | |
| 156. | Randy Johnson+ (38) | .8276 | 2002 | 260.0 | L |
| Justin Verlander (28) | .8276 | 2011 | 251.0 | R | |
| 158. | Greg Maddux+ (31) | .8261 | 1997 | 232.2 | R |
| Ed Reulbach (23) | .8261 | 1906 | 218.0 | R | |
| Elmer Riddle (26) | .8261 | 1941 | 216.2 | R | |
| 161. | Jack Chesbro+ (28) | .8235 | 1902 | 286.1 | R |
| Nathan Eovaldi (25) | .8235 | 2015 | 154.1 | R | |
| Juan Guzmán (26) | .8235 | 1993 | 221.0 | R | |
| Jay Hughes (25) | .8235 | 1899 | 291.2 | R | |
| Bob Moose (21) | .8235 | 1969 | 170.0 | R | |
| Roger Moret (25) | .8235 | 1975 | 145.0 | L | |
| Al Orth (26) | .8235 | 1899 | 144.2 | R | |
| Roy Oswalt (23) | .8235 | 2001 | 141.2 | R | |
| Wayne Simpson (21) | .8235 | 1970 | 176.0 | R | |
| Dazzy Vance+ (33) | .8235 | 1924 | 308.1 | R | |
| 171. | Charles Bender+ (26) | .8214 | 1910 | 250.0 | R |
| Bob Purkey (32) | .8214 | 1962 | 288.1 | R | |
| Barry Zito (24) | .8214 | 2002 | 229.1 | L | |
| 174. | Vet Barnes (25) | .8182 | 1937 | 69.1 | R |
| William Bell (26) | .8182 | 1924 | 108.0 | R | |
| Joe Boever (33) | .8182 | 1994 | 81.1 | R | |
| Roger Clemens (41) | .8182 | 2004 | 214.1 | R | |
| Domingo Germán (26) | .8182 | 2019 | 143.0 | R | |
| Clayton Kershaw (29) | .8182 | 2017 | 175.0 | L | |
| Corey Kluber (31) | .8182 | 2017 | 203.2 | R | |
| Sal Maglie (33) | .8182 | 1950 | 206.0 | R | |
| Bob McClure (33) | .8182 | 1924 | 114.2 | R | |
| Miles Mikolas (29) | .8182 | 2018 | 200.2 | R | |
| Mark Portugal (30) | .8182 | 1993 | 208.0 | R | |
| Hilton Smith+ (31) | .8182 | 1938 | 112.2 | R | |
| Joe Strong (26) | .8182 | 1929 | 109.2 | R | |
| Justin Verlander (39) | .8182 | 2022 | 175.0 | R | |
| Bob Welch (33) | .8182 | 1990 | 238.0 | R | |
| David Wells (35) | .8182 | 1998 | 214.1 | L | |
| 190. | Joe McGinnity+ (33) | .8140 | 1904 | 408.0 | R |
| 191. | Dave Brown (23) | .8125 | 1920 | 148.2 | L |
| Dave Brown (25) | .8125 | 1922 | 155.0 | L | |
| Mordecai Brown+ (29) | .8125 | 1906 | 277.1 | R | |
| Jim Coates (27) | .8125 | 1960 | 149.1 | R | |
| Atley Donald (28) | .8125 | 1939 | 153.0 | R | |
| Bob Feller+ (35) | .8125 | 1954 | 140.0 | R | |
| Russ Ford (27) | .8125 | 1910 | 299.2 | R | |
| Moose Haas (27) | .8125 | 1983 | 179.0 | R | |
| Al Hrabosky (25) | .8125 | 1975 | 97.1 | L | |
| Carl Hubbell+ (33) | .8125 | 1936 | 304.0 | L | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Tommy John (31) | .8125 | 1974 | 153.0 | L | |
| Howie Krist (26) | .8125 | 1942 | 118.1 | R | |
| Al McBean (25) | .8125 | 1963 | 122.1 | R | |
| Jamie Moyer (33) | .8125 | 1996 | 160.2 | L | |
| Satchel Paige+ (27) | .8125 | 1934 | 145.2 | R | |
| Eddie Plank+ (36) | .8125 | 1912 | 259.2 | L | |
| Rip Sewell (41) | .8125 | 1948 | 121.2 | R | |
| Jorge Sosa (27) | .8125 | 2005 | 134.0 | R | |
| Hooks Wiltse (24) | .8125 | 1904 | 164.2 | L | |
| 210. | Dizzy Dean+ (24) | .8108 | 1934 | 311.2 | R |
| 211. | Paul Abbott (33) | .8095 | 2001 | 163.0 | R |
| Johnny Allen (27) | .8095 | 1932 | 192.0 | R | |
| Chris Carpenter (34) | .8095 | 2009 | 192.2 | R | |
| Doc Crandall (22) | .8095 | 1910 | 207.2 | R | |
| Jimmy Key (33) | .8095 | 1994 | 168.0 | L | |
| Matt Moore (24) | .8095 | 2013 | 150.1 | L | |
| Phil Niekro+ (43) | .8095 | 1982 | 234.1 | R | |
| Ed Reulbach (24) | .8095 | 1907 | 192.0 | R | |
| Ted Wilks (28) | .8095 | 1944 | 207.2 | R | |
| Nip Winters (27) | .8095 | 1926 | 175.2 | L | |
| 221. | Tiny Bonham (28) | .8077 | 1942 | 226.0 | R |
| Chris Carpenter (30) | .8077 | 2005 | 241.2 | R | |
| General Crowder (29) | .8077 | 1928 | 244.0 | R | |
| Bill Foster+ (23) | .8077 | 1927 | 217.0 | L | |
| Catfish Hunter+ (27) | .8077 | 1973 | 256.1 | R | |
| Larry Jansen (26) | .8077 | 1947 | 248.0 | R | |
| Clayton Kershaw (23) | .8077 | 2011 | 233.1 | L | |
| Dave McNally (28) | .8077 | 1971 | 224.1 | L | |
| Bobo Newsom (32) | .8077 | 1940 | 264.0 | R | |
| Blake Snell (25) | .8077 | 2018 | 180.2 | L | |
| Kyle Wright (26) | .8077 | 2022 | 180.1 | R | |
| 232. | Howie Camnitz (27) | .8065 | 1909 | 283.0 | R |
| Dave Ferriss (24) | .8065 | 1946 | 274.0 | R | |
| Juan Marichal+ (28) | .8065 | 1966 | 307.1 | R | |
| Christy Mathewson+ (28) | .8065 | 1909 | 275.1 | R | |
| 236. | Eddie Cicotte (35) | .8056 | 1919 | 306.2 | R |
| 237. | Dan Bankhead (20) | .8000 | 1940 | 45.1 | R |
| Doc Bracken (32) | .8000 | 1947 | 31.0 | R | |
| Ches Buchanan (34) | .8000 | 1942 | 45.1 | R | |
| Walker Buehler (26) | .8000 | 2021 | 207.2 | R | |
| John Candelaria (23) | .8000 | 1977 | 230.2 | L | |
| Spoon Carter (32) | .8000 | 1935 | 55.2 | R | |
| Gerrit Cole (28) | .8000 | 2019 | 212.1 | R | |
| Stan Coveleski+ (35) | .8000 | 1925 | 241.0 | R | |
| Leon Day+ (25) | .8000 | 1942 | 83.1 | R | |
| Ed Doheny (28) | .8000 | 1902 | 188.1 | L | |
| Hubert Glenn (27) | .8000 | 1944 | 49.1 | R | |
| Tommy Greene (26) | .8000 | 1993 | 200.0 | R | |
| Larry Gura (30) | .8000 | 1978 | 221.2 | L | |
| Rats Henderson (31) | .8000 | 1928 | 100.0 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Logan Hensley (25) | .8000 | 1925 | 155.1 | R | |
| Logan Hensley (30) | .8000 | 1930 | 174.0 | R | |
| Jimmy Hill (22) | .8000 | 1940 | 82.2 | L | |
| Bert Humphries (32) | .8000 | 1913 | 181.0 | R | |
| Floyd Kranson (26) | .8000 | 1940 | 37.2 | R | |
| Sam Leever (33) | .8000 | 1905 | 229.2 | R | |
| Rufus Lewis (26) | .8000 | 1946 | 91.1 | R | |
| Eddie Lopat (35) | .8000 | 1953 | 178.1 | L | |
| Firpo Marberry (32) | .8000 | 1931 | 219.0 | R | |
| Leroy Matlock (24) | .8000 | 1931 | 50.2 | L | |
| Frank McAllister (21) | .8000 | 1939 | 49.0 | R | |
| Booker McDaniel (29) | .8000 | 1943 | 80.0 | R | |
| Henry Miller (29) | .8000 | 1947 | 112.1 | R | |
| Denny Neagle (28) | .8000 | 1997 | 233.1 | L | |
| Everett Nelson | .8000 | 1932 | 56.1 | R | |
| Don Newcombe (29) | .8000 | 1955 | 233.2 | R | |
| Iván Nova (24) | .8000 | 2011 | 165.1 | R | |
| Satchel Paige+ (29) | .8000 | 1936 | 71.2 | R | |
| Jim Palmer+ (23) | .8000 | 1969 | 181.0 | R | |
| Brad Penny (29) | .8000 | 2007 | 208.0 | R | |
| Andy Porter (24) | .8000 | 1935 | 34.2 | R | |
| Andy Porter (34) | .8000 | 1945 | 95.0 | R | |
| David Price (26) | .8000 | 2012 | 211.0 | L | |
| Robin Roberts+ (25) | .8000 | 1952 | 330.0 | R | |
| Bullet Rogan+ (32) | .8000 | 1926 | 122.2 | R | |
| Pat Scantlebury (27) | .8000 | 1945 | 49.2 | L | |
| Matt Shoemaker (27) | .8000 | 2014 | 136.0 | R | |
| Spencer Strider (24) | .8000 | 2023 | 186.2 | R | |
| Luis Tiant (38) | .8000 | 1945 | 46.2 | L | |
| Ted Trent (26) | .8000 | 1930 | 122.1 | R | |
| George Walker (25) | .8000 | 1940 | 49.0 | R | |
| Jered Weaver (29) | .8000 | 2012 | 188.2 | R | |
| Mickey Welch+ (25) | .8000 | 1885 | 492.0 | R | |
| Jim Willis | .8000 | 1935 | 53.0 | R | |
| Nip Winters (25) | .8000 | 1924 | 208.0 | L | |
| 286. | Al Spalding+ (25) | .7966 | 1876 | 528.2 | R |
| 287. | Don Newcombe (30) | .7941 | 1956 | 268.0 | R |
| 288. | Jocko Flynn (22) | .7931 | 1886 | 257.0 | R |
| Ellis Kinder (34) | .7931 | 1949 | 252.0 | R | |
| Sal Maglie (34) | .7931 | 1951 | 298.0 | R | |
| Bret Saberhagen (25) | .7931 | 1989 | 262.1 | R | |
| 292. | Wally Bunker (19) | .7917 | 1964 | 214.0 | R |
| Shawn Estes (24) | .7917 | 1997 | 201.0 | L | |
| Félix Hernández (23) | .7917 | 2009 | 238.2 | R | |
| Sandy Koufax+ (28) | .7917 | 1964 | 223.0 | L | |
| Dutch Leonard (22) | .7917 | 1914 | 224.2 | L | |
| Jon Lester (32) | .7917 | 2016 | 202.2 | L | |
| 298. | Joe Black (28) | .7895 | 1952 | 142.1 | R |
| Hank Borowy (26) | .7895 | 1942 | 178.1 | R | |
| Harry Brecheen (30) | .7895 | 1945 | 157.1 | L | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Gerrit Cole (32) | .7895 | 2023 | 209.0 | R | |
| Andy Cooper+ (32) | .7895 | 1929 | 151.0 | L | |
| Mike Fiers (34) | .7895 | 2019 | 184.2 | R | |
| Larry French (34) | .7895 | 1942 | 147.2 | L | |
| Zack Greinke (29) | .7895 | 2013 | 177.2 | R | |
| Lefty Grove+ (39) | .7895 | 1939 | 191.0 | L | |
| Don Gullett (24) | .7895 | 1975 | 159.2 | L | |
| Red Lucas (34) | .7895 | 1936 | 175.2 | R | |
| Roy Mahaffey (27) | .7895 | 1931 | 162.1 | R | |
| Bob McClure (34) | .7895 | 1925 | 139.0 | R | |
| Wade Miller (25) | .7895 | 2002 | 164.2 | R | |
| Max Scherzer (36) | .7895 | 2021 | 179.1 | R | |
| Stephen Strasburg (27) | .7895 | 2016 | 147.2 | R | |
| Stephen Strasburg (28) | .7895 | 2017 | 175.1 | R | |
| 315. | Bullet Joe Bush (29) | .7879 | 1922 | 255.1 | R |
| Bill James (22) | .7879 | 1914 | 332.1 | R | |
| Fred Klobedanz (26) | .7879 | 1897 | 309.1 | L | |
| 318. | Jake Arrieta (29) | .7857 | 2015 | 229.0 | R |
| Ray Brown+ (29) | .7857 | 1937 | 126.0 | R | |
| Mark Clark (26) | .7857 | 1994 | 127.1 | R | |
| Army Cooper (29) | .7857 | 1929 | 125.2 | L | |
| Roosevelt Davis (25) | .7857 | 1930 | 117.2 | R | |
| Nelson Dean (26) | .7857 | 1925 | 134.2 | R | |
| Doug Drabek (27) | .7857 | 1990 | 231.1 | R | |
| Willis Flournoy (33) | .7857 | 1929 | 121.2 | L | |
| Tom Glavine+ (27) | .7857 | 1993 | 239.1 | L | |
| Ron Guidry (34) | .7857 | 1985 | 259.0 | L | |
| George Harney (34) | .7857 | 1924 | 124.1 | R | |
| Tex Hughson (26) | .7857 | 1942 | 281.0 | R | |
| Bert Hunter (22) | .7857 | 1933 | 107.2 | R | |
| Jouett Meekin (27) | .7857 | 1894 | 418.0 | R | |
| Curt Schilling (34) | .7857 | 2001 | 256.2 | R | |
| Lon Warneke (23) | .7857 | 1932 | 277.0 | R | |
| 334. | Bob Caruthers (25) | .7843 | 1889 | 445.0 | R |
| 335. | George Mullin (28) | .7838 | 1909 | 303.2 | R |
| 336. | Bill Bernhard (31) | .7826 | 1902 | 226.0 | R |
| Tom Browning (28) | .7826 | 1988 | 250.2 | L | |
| Bartolo Colón (26) | .7826 | 1999 | 205.0 | R | |
| Johnny Cueto (30) | .7826 | 2016 | 219.2 | R | |
| Tex Hughson (28) | .7826 | 1944 | 203.1 | R | |
| Jack Kramer (30) | .7826 | 1948 | 205.0 | R | |
| Cliff Lee (26) | .7826 | 2005 | 202.0 | L | |
| Tim Lincecum (24) | .7826 | 2008 | 227.0 | R | |
| Jack Manning (22) | .7826 | 1876 | 197.1 | R | |
| Mike Mussina+ (23) | .7826 | 1992 | 241.0 | R | |
| Bob Ojeda (28) | .7826 | 1986 | 217.1 | L | |
| Johnny Podres (28) | .7826 | 1961 | 182.2 | L | |
| David Price (29) | .7826 | 2015 | 220.1 | L | |
| Max Scherzer (29) | .7826 | 2014 | 220.1 | R | |
| Bryn Smith (29) | .7826 | 1985 | 222.1 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| 351. | Paul Derringer (32) | .7813 | 1939 | 301.0 | R |
| Bill Hoffer (25) | .7813 | 1896 | 309.0 | R | |
| Sam Leever (31) | .7813 | 1903 | 284.1 | R | |
| Mel Parnell (27) | .7813 | 1949 | 295.1 | L | |
| Tom Seaver+ (24) | .7813 | 1969 | 273.1 | R | |
| Steve Stone (32) | .7813 | 1980 | 250.2 | R | |
| 357. | Fireman Anderson (30) | .7778 | 1943 | 85.1 | R |
| Johnny Beazley (24) | .7778 | 1942 | 215.1 | R | |
| William Bell (31) | .7778 | 1929 | 158.2 | R | |
| Walker Buehler (24) | .7778 | 2019 | 182.1 | R | |
| Bill Byrd (30) | .7778 | 1938 | 83.1 | R | |
| Bill Byrd (31) | .7778 | 1939 | 76.0 | R | |
| Roger Clemens (27) | .7778 | 1990 | 228.1 | R | |
| Darltie Cooper (20) | .7778 | 1923 | 167.0 | R | |
| Sam Cooper (28) | .7778 | 1926 | 88.1 | ||
| Russ Ford (31) | .7778 | 1914 | 247.1 | R | |
| Marco Gonzales (28) | .7778 | 2020 | 69.2 | L | |
| Lefty Grove+ (38) | .7778 | 1938 | 163.2 | L | |
| Don Gullett (26) | .7778 | 1977 | 158.1 | L | |
| Bump Hadley (31) | .7778 | 1936 | 173.2 | R | |
| Earl Harrison (27) | .7778 | 1927 | 74.0 | ||
| Randy Johnson+ (37) | .7778 | 2001 | 249.2 | L | |
| Ed Klepfer (29) | .7778 | 1917 | 213.0 | R | |
| Ray Kolp (27) | .7778 | 1922 | 169.2 | R | |
| Jim LaMarque (24) | .7778 | 1945 | 91.0 | L | |
| Mat Latos (24) | .7778 | 2012 | 209.1 | R | |
| Oscar Levis (27) | .7778 | 1926 | 76.0 | R | |
| Hubert Lockhart (24) | .7778 | 1923 | 101.0 | L | |
| Pedro Martinez+ (31) | .7778 | 2003 | 186.2 | R | |
| Verdell Mathis (30) | .7778 | 1944 | 79.0 | L | |
| Joe McGinnity+ (29) | .7778 | 1900 | 343.0 | R | |
| Bobby Mitchell (22) | .7778 | 1878 | 80.0 | L | |
| George Mitchell (31) | .7778 | 1931 | 67.1 | R | |
| Jack Morris+ (37) | .7778 | 1992 | 240.2 | R | |
| Art Nehf (31) | .7778 | 1924 | 171.2 | L | |
| Satchel Paige+ (20) | .7778 | 1927 | 98.0 | R | |
| Satchel Paige+ (23) | .7778 | 1930 | 75.1 | R | |
| Gaylord Perry+ (39) | .7778 | 1978 | 260.2 | R | |
| Diamond Pipkins (34) | .7778 | 1942 | 58.0 | L | |
| Bret Saberhagen (30) | .7778 | 1994 | 177.1 | R | |
| Curt Schilling (37) | .7778 | 2004 | 226.2 | R | |
| Tom Seaver+ (32) | .7778 | 1977 | 261.1 | R | |
| Masahiro Tanaka (27) | .7778 | 2016 | 199.2 | R | |
| Johnny Taylor (22) | .7778 | 1938 | 75.0 | R | |
| Frank Thompson (28) | .7778 | 1947 | 96.0 | L | |
| Justin Verlander (36) | .7778 | 2019 | 223.0 | R | |
| Pete Vuckovich (28) | .7778 | 1981 | 149.2 | R | |
| Michael Wacha (31) | .7778 | 2023 | 134.1 | R | |
| Bob Welch (28) | .7778 | 1985 | 167.1 | R | |
| Bob Wickman (24) | .7778 | 1993 | 140.0 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Cy Young+ (28) | .7778 | 1895 | 369.2 | R | |
| 402. | Jack Coombs (27) | .7750 | 1910 | 353.0 | R |
| Christy Mathewson+ (24) | .7750 | 1905 | 338.2 | R | |
| 404. | Whitey Ford+ (34) | .7742 | 1963 | 269.1 | L |
| Lefty Gomez+ (23) | .7742 | 1932 | 265.1 | L | |
| Clark Griffith+ (31) | .7742 | 1901 | 266.2 | R | |
| Rube Marquard+ (24) | .7742 | 1911 | 277.2 | L | |
| Ed Reulbach (25) | .7742 | 1908 | 297.2 | R | |
| Jack Sanford (33) | .7742 | 1962 | 265.1 | R | |
| Bobby Shantz (26) | .7742 | 1952 | 279.2 | L | |
| Frank Viola (28) | .7742 | 1988 | 255.1 | L | |
| Rube Waddell+ (25) | .7742 | 1902 | 276.1 | L | |
| 413. | Jack Chesbro+ (30) | .7736 | 1904 | 454.2 | R |
| 414. | Charles Bender+ (27) | .7727 | 1911 | 216.1 | R |
| Bert Blyleven+ (38) | .7727 | 1989 | 241.0 | R | |
| Bill Campbell (27) | .7727 | 1976 | 167.2 | R | |
| Jamie Moyer (34) | .7727 | 1997 | 188.2 | L | |
| Charles Nagy (29) | .7727 | 1996 | 222.0 | R | |
| CC Sabathia (20) | .7727 | 2001 | 180.1 | L | |
| Jason Schmidt (30) | .7727 | 2003 | 207.2 | R | |
| 421. | Dolf Luque (32) | .7714 | 1923 | 322.0 | R |
| Vic Willis+ (23) | .7714 | 1899 | 342.2 | R | |
| 423. | Christy Mathewson+ (27) | .7708 | 1908 | 390.2 | R |
| 424. | William Bell (27) | .7692 | 1925 | 112.0 | R |
| William Bell (32) | .7692 | 1930 | 110.0 | R | |
| Mordecai Brown+ (30) | .7692 | 1907 | 233.0 | R | |
| Bill Byrd (34) | .7692 | 1942 | 99.0 | R | |
| John Clarkson+ (22) | .7692 | 1884 | 118.0 | R | |
| Roger Clemens (35) | .7692 | 1998 | 234.2 | R | |
| R.A. Dickey (37) | .7692 | 2012 | 233.2 | R | |
| Carl Erskine (26) | .7692 | 1953 | 246.2 | R | |
| Charlie Ferguson (23) | .7692 | 1886 | 395.2 | R | |
| Tom Glavine+ (32) | .7692 | 1998 | 229.1 | L | |
| Bob Grim (24) | .7692 | 1954 | 199.0 | R | |
| Lefty Grove+ (29) | .7692 | 1929 | 275.1 | L | |
| Jesse Hubbard (31) | .7692 | 1927 | 128.2 | R | |
| Tim Hudson (24) | .7692 | 2000 | 202.1 | R | |
| Ray Kremer (31) | .7692 | 1926 | 231.1 | R | |
| Jim LaMarque (26) | .7692 | 1947 | 122.0 | L | |
| Bill Lee (25) | .7692 | 1935 | 252.0 | R | |
| Jon Lieber (31) | .7692 | 2001 | 232.1 | R | |
| Ramón Martínez (22) | .7692 | 1990 | 234.1 | R | |
| Leroy Matlock (29) | .7692 | 1936 | 114.0 | L | |
| Webster McDonald (26) | .7692 | 1926 | 116.1 | R | |
| Andy Messersmith (28) | .7692 | 1974 | 292.1 | R | |
| Jamie Moyer (38) | .7692 | 2001 | 209.2 | L | |
| Jerry Nops (22) | .7692 | 1897 | 220.2 | L | |
| Jimmy Oldham (28) | .7692 | 1921 | 125.0 | R | |
| Jim Perry (33) | .7692 | 1969 | 261.2 | R | |
| Bret Saberhagen (21) | .7692 | 1985 | 235.1 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Johan Santana (25) | .7692 | 2004 | 228.0 | L | |
| Jesse Tannehill (25) | .7692 | 1900 | 234.0 | L | |
| Jesse Tannehill (27) | .7692 | 1902 | 231.0 | L | |
| Mike Torrez (34) | .7692 | 1981 | 127.1 | R | |
| Will White (27) | .7692 | 1882 | 480.0 | R | |
| Nip Winters (24) | .7692 | 1923 | 118.0 | L | |
| 457. | John Clarkson+ (23) | .7681 | 1885 | 623.0 | R |
| 458. | Cy Young+ (34) | .7674 | 1901 | 371.1 | R |
| 459. | Bob Gibson+ (34) | .7667 | 1970 | 294.0 | R |
| Vean Gregg (26) | .7667 | 1911 | 244.2 | L | |
| Waite Hoyt+ (28) | .7667 | 1928 | 273.0 | R | |
| Walter Johnson+ (36) | .7667 | 1924 | 277.2 | R | |
| Bob Lemon+ (33) | .7667 | 1954 | 258.1 | R | |
| Jim Maloney (23) | .7667 | 1963 | 250.1 | R | |
| Orval Overall (26) | .7667 | 1907 | 268.1 | R | |
| Curt Schilling (35) | .7667 | 2002 | 259.1 | R | |
| Warren Spahn+ (32) | .7667 | 1953 | 265.2 | L | |
| Warren Spahn+ (42) | .7667 | 1963 | 259.2 | L | |
| 469. | William Bell (29) | .7647 | 1927 | 162.0 | R |
| Earl Caldwell (41) | .7647 | 1946 | 90.2 | R | |
| Steve Carlton+ (36) | .7647 | 1981 | 190.0 | L | |
| Mike Clevinger (28) | .7647 | 2019 | 126.0 | R | |
| Danny Darwin (24) | .7647 | 1980 | 109.2 | R | |
| Al Demaree (28) | .7647 | 1913 | 199.2 | R | |
| Bill Foster+ (22) | .7647 | 1926 | 174.2 | L | |
| Jesse Haines+ (32) | .7647 | 1926 | 183.0 | R | |
| Ken Holloway (27) | .7647 | 1925 | 157.2 | R | |
| Tommy Hunter (23) | .7647 | 2010 | 128.0 | R | |
| Sandy Koufax+ (29) | .7647 | 1965 | 335.2 | L | |
| Ted Lewis (25) | .7647 | 1898 | 313.1 | R | |
| Luther McDonald (21) | .7647 | 1927 | 138.2 | R | |
| Bob Muncrief (29) | .7647 | 1945 | 145.2 | R | |
| Johnny Murphy (28) | .7647 | 1937 | 110.0 | R | |
| Allie Reynolds (37) | .7647 | 1954 | 157.1 | R | |
| Garrett Richards (26) | .7647 | 2014 | 168.2 | R | |
| Michael Soroka (21) | .7647 | 2019 | 174.2 | R | |
| Noah Syndergaard (25) | .7647 | 2018 | 154.1 | R | |
| Edsall Walker (29) | .7647 | 1940 | 136.2 | L | |
| Brandon Woodruff (29) | .7647 | 2022 | 153.1 | R | |
| 490. | Lady Baldwin (27) | .7636 | 1886 | 487.0 | L |
| 491. | Mordecai Brown+ (31) | .7632 | 1908 | 312.1 | R |
| Charlie Buffinton (30) | .7632 | 1891 | 363.2 | R | |
| Bob Caruthers (23) | .7632 | 1887 | 341.0 | R | |
| Hal Newhouser+ (23) | .7632 | 1944 | 312.1 | L | |
| 495. | Jack Bentley (29) | .7619 | 1924 | 188.0 | L |
| Harry Brecheen (29) | .7619 | 1944 | 189.1 | L | |
| Tommy Byrne (35) | .7619 | 1955 | 160.0 | L | |
| Matt Cain (27) | .7619 | 2012 | 219.1 | R | |
| Spud Chandler (34) | .7619 | 1942 | 200.2 | R | |
| David Cone (31) | .7619 | 1994 | 171.2 | R | |
| Rank | Player (age that year) | Win-Loss % | Year | IP | Throws |
| Juan Guzmán (25) | .7619 | 1992 | 180.2 | R | |
| Roy Halladay+ (29) | .7619 | 2006 | 220.0 | R | |
| Ken Hill (28) | .7619 | 1994 | 154.2 | R | |
| Derek Holland (24) | .7619 | 2011 | 198.0 | L | |
| Sad Sam Jones (25) | .7619 | 1918 | 184.0 | R | |
| Clayton Kershaw (31) | .7619 | 2019 | 178.1 | L | |
| Red Munger (28) | .7619 | 1947 | 224.1 | R | |
| Mike Mussina+ (25) | .7619 | 1994 | 176.1 | R | |
| Bullet Rogan+ (30) | .7619 | 1924 | 175.0 | R | |
| Rosy Ryan (25) | .7619 | 1923 | 172.2 | R | |
| Rip Sewell (33) | .7619 | 1940 | 189.2 | R | |
| Justin Steele (27) | .7619 | 2023 | 173.1 | L | |
| Bob Tewksbury (31) | .7619 | 1992 | 233.0 | R |
