Single-Season Leaders & Records for Games Started
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| Rank | Player (age that year) | Games Started | Year | IP | Throws |
|---|---|---|---|---|---|
| 1. | Pud Galvin+ (26) | 75 | 1883 | 656.1 | R |
| Will White (24) | 75 | 1879 | 680.0 | R | |
| 3. | Jim McCormick (23) | 74 | 1880 | 657.2 | R |
| 4. | Guy Hecker (28) | 73 | 1884 | 670.2 | R |
| Old Hoss Radbourn+ (29) | 73 | 1884 | 678.2 | R | |
| 6. | John Clarkson+ (27) | 72 | 1889 | 620.0 | R |
| Pud Galvin+ (27) | 72 | 1884 | 636.1 | R | |
| 8. | John Clarkson+ (23) | 70 | 1885 | 623.0 | R |
| Bill Hutchison (32) | 70 | 1892 | 622.0 | R | |
| 10. | Matt Kilroy (21) | 69 | 1887 | 589.1 | L |
| 11. | Jim Devlin (27) | 68 | 1876 | 622.0 | R |
| Tim Keefe+ (26) | 68 | 1883 | 619.0 | R | |
| Matt Kilroy (20) | 68 | 1886 | 583.0 | L | |
| Old Hoss Radbourn+ (28) | 68 | 1883 | 632.1 | R | |
| 15. | Charlie Buffinton (23) | 67 | 1884 | 587.0 | R |
| Jim McCormick (25) | 67 | 1882 | 595.2 | R | |
| Toad Ramsey (21) | 67 | 1886 | 588.2 | L | |
| John Ward+ (20) | 67 | 1880 | 595.0 | R | |
| 19. | Pud Galvin+ (22) | 66 | 1879 | 593.0 | R |
| Bill Hutchison (30) | 66 | 1890 | 603.0 | R | |
| Lee Richmond (23) | 66 | 1880 | 590.2 | L | |
| Dupee Shaw (25) | 66 | 1884 | 543.1 | L | |
| 23. | Jim McCormick (27) | 65 | 1884 | 569.0 | R |
| Tony Mullane (25) | 65 | 1884 | 567.0 | R | |
| Mickey Welch+ (24) | 65 | 1884 | 557.1 | R | |
| Will White (28) | 65 | 1883 | 577.0 | R | |
| 27. | Tommy Bond (23) | 64 | 1879 | 555.1 | R |
| George Bradley (23) | 64 | 1876 | 573.0 | R | |
| Tim Keefe+ (29) | 64 | 1886 | 535.0 | R | |
| Silver King (20) | 64 | 1888 | 584.2 | R | |
| Toad Ramsey (22) | 64 | 1887 | 561.0 | L | |
| Mickey Welch+ (20) | 64 | 1880 | 574.0 | R | |
| 33. | Ed Morris (22) | 63 | 1885 | 581.0 | L |
| Ed Morris (23) | 63 | 1886 | 555.1 | L | |
| Jim Whitney (23) | 63 | 1881 | 552.1 | R | |
| 36. | Amos Rusie+ (19) | 62 | 1890 | 548.2 | R |
| Amos Rusie+ (21) | 62 | 1892 | 541.0 | R | |
| Will White (25) | 62 | 1880 | 517.1 | R | |
| 39. | Jersey Bakley (24) | 61 | 1888 | 532.2 | R |
| John Coleman (20) | 61 | 1883 | 538.1 | R | |
| Jim Devlin (28) | 61 | 1877 | 559.0 | R | |
| Hardie Henderson (22) | 61 | 1885 | 539.1 | R | |
| 43. | Larry Corcoran (20) | 60 | 1880 | 536.1 | R |
| Jim McCormick (22) | 60 | 1879 | 546.1 | R | |
| Larry McKeon (18) | 60 | 1884 | 512.0 | ||
| Al Spalding+ (25) | 60 | 1876 | 528.2 | R | |
| Bill Sweeney (26) | 60 | 1884 | 538.0 | R | |
| John Ward+ (19) | 60 | 1879 | 587.0 | R | |
| 49. | Mark Baldwin (25) | 59 | 1889 | 513.2 | R |
| Tommy Bond (22) | 59 | 1878 | 532.2 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| John Clarkson+ (25) | 59 | 1887 | 523.0 | R | |
| Larry Corcoran (24) | 59 | 1884 | 516.2 | R | |
| Frank Mountain (23) | 59 | 1883 | 503.0 | R | |
| Billy Taylor (29) | 59 | 1884 | 523.0 | R | |
| Mickey Welch+ (26) | 59 | 1886 | 500.0 | R | |
| 56. | Tommy Bond (21) | 58 | 1877 | 521.0 | R |
| Hugh Daily (36) | 58 | 1884 | 500.2 | R | |
| Bill Hutchison (31) | 58 | 1891 | 561.0 | R | |
| Tim Keefe+ (27) | 58 | 1884 | 483.0 | R | |
| Terry Larkin (23) | 58 | 1879 | 513.1 | R | |
| Jim McCormick (24) | 58 | 1881 | 526.0 | R | |
| Sadie McMahon (23) | 58 | 1891 | 503.0 | R | |
| Old Hoss Radbourn+ (31) | 58 | 1886 | 509.1 | R | |
| 64. | Tommy Bond (24) | 57 | 1880 | 493.0 | R |
| Dave Foutz (29) | 57 | 1886 | 504.0 | R | |
| Sadie McMahon (22) | 57 | 1890 | 509.0 | R | |
| Amos Rusie+ (20) | 57 | 1891 | 500.1 | R | |
| Ed Seward (21) | 57 | 1888 | 518.2 | R | |
| 69. | Lady Baldwin (27) | 56 | 1886 | 487.0 | L |
| Mark Baldwin (26) | 56 | 1890 | 492.0 | R | |
| Tim Keefe+ (30) | 56 | 1887 | 476.2 | R | |
| Matt Kilroy (23) | 56 | 1889 | 480.2 | L | |
| Silver King (22) | 56 | 1890 | 461.0 | R | |
| Terry Larkin (21) | 56 | 1877 | 501.0 | R | |
| Terry Larkin (22) | 56 | 1878 | 506.0 | R | |
| Bobby Mathews (24) | 56 | 1876 | 516.0 | R | |
| Tony Mullane (27) | 56 | 1886 | 529.2 | R | |
| Jack Stivetts (23) | 56 | 1891 | 440.0 | R | |
| Charlie Sweeney (21) | 56 | 1884 | 492.0 | R | |
| Jim Whitney (25) | 56 | 1883 | 514.0 | R | |
| 81. | John Clarkson+ (24) | 55 | 1886 | 466.2 | R |
| George Derby (23) | 55 | 1881 | 494.2 | R | |
| Kid Gleason (24) | 55 | 1890 | 506.0 | R | |
| Ed Morris (25) | 55 | 1888 | 480.0 | L | |
| Tony Mullane (23) | 55 | 1882 | 460.1 | R | |
| Phenomenal Smith (22) | 55 | 1887 | 491.1 | L | |
| Adonis Terry (19) | 55 | 1884 | 476.0 | R | |
| Mickey Welch+ (25) | 55 | 1885 | 492.0 | R | |
| Gus Weyhing (20) | 55 | 1887 | 466.1 | R | |
| 90. | Bob Barr (33) | 54 | 1890 | 493.1 | R |
| Ed Beatin (23) | 54 | 1890 | 474.1 | L | |
| George Bradley (26) | 54 | 1879 | 487.0 | R | |
| John Clarkson+ (26) | 54 | 1888 | 483.1 | R | |
| Pud Galvin+ (23) | 54 | 1880 | 458.2 | R | |
| Harry McCormick (23) | 54 | 1879 | 457.1 | R | |
| Henry Porter (27) | 54 | 1885 | 481.2 | R | |
| Henry Porter (30) | 54 | 1888 | 474.0 | R | |
| Will White (27) | 54 | 1882 | 480.0 | R | |
| 99. | Mark Baldwin (28) | 53 | 1892 | 440.1 | R |
| Kid Carsey (18) | 53 | 1891 | 415.0 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Bob Caruthers (21) | 53 | 1885 | 482.1 | R | |
| Larry Corcoran (23) | 53 | 1883 | 473.2 | R | |
| Pud Galvin+ (24) | 53 | 1881 | 474.0 | R | |
| Guy Hecker (29) | 53 | 1885 | 480.0 | R | |
| Silver King (21) | 53 | 1889 | 458.0 | R | |
| Jack Lynch (27) | 53 | 1884 | 496.0 | R | |
| Gus Weyhing (22) | 53 | 1889 | 449.0 | R | |
| 108. | Guy Hecker (27) | 52 | 1883 | 469.0 | R |
| Hardie Henderson (21) | 52 | 1884 | 439.1 | R | |
| Frank Killen (21) | 52 | 1892 | 459.2 | L | |
| Phil Knell (26) | 52 | 1891 | 462.0 | L | |
| Al Mays (22) | 52 | 1887 | 441.1 | R | |
| Ed Morris (21) | 52 | 1884 | 429.2 | L | |
| Lee Richmond (24) | 52 | 1881 | 462.1 | L | |
| Amos Rusie+ (22) | 52 | 1893 | 482.0 | R | |
| Ed Seward (20) | 52 | 1887 | 470.2 | R | |
| Elmer Smith (19) | 52 | 1887 | 447.1 | L | |
| Mickey Welch+ (23) | 52 | 1883 | 426.0 | R | |
| Will White (23) | 52 | 1878 | 468.0 | R | |
| Will White (29) | 52 | 1884 | 456.0 | R | |
| 121. | Mark Baldwin (27) | 51 | 1891 | 437.2 | R |
| Theodore Breitenstein (26) | 51 | 1895 | 438.2 | L | |
| Ice Box Chamberlain (21) | 51 | 1889 | 421.2 | R | |
| Jack Chesbro+ (30) | 51 | 1904 | 454.2 | R | |
| John Clarkson+ (29) | 51 | 1891 | 460.2 | R | |
| Bert Cunningham (22) | 51 | 1888 | 453.1 | R | |
| Pud Galvin+ (25) | 51 | 1882 | 445.1 | R | |
| Tim Keefe+ (31) | 51 | 1888 | 434.1 | R | |
| Kid Nichols+ (22) | 51 | 1892 | 453.0 | R | |
| Old Hoss Radbourn+ (27) | 51 | 1882 | 466.0 | R | |
| Fleury Sullivan (22) | 51 | 1884 | 441.0 | ||
| Gus Weyhing (24) | 51 | 1891 | 450.0 | R | |
| George Weidman (25) | 51 | 1886 | 427.2 | R | |
| 134. | Theodore Breitenstein (25) | 50 | 1894 | 447.1 | L |
| Charlie Buffinton (24) | 50 | 1885 | 434.1 | R | |
| Bob Caruthers (25) | 50 | 1889 | 445.0 | R | |
| Ed Daily (22) | 50 | 1885 | 440.0 | R | |
| Bob Emslie (25) | 50 | 1884 | 455.1 | R | |
| Pud Galvin+ (29) | 50 | 1886 | 434.2 | R | |
| Pud Galvin+ (31) | 50 | 1888 | 437.1 | R | |
| Pink Hawley (22) | 50 | 1895 | 444.1 | R | |
| Frank Killen (25) | 50 | 1896 | 432.1 | L | |
| Jack Lynch (29) | 50 | 1886 | 432.2 | R | |
| Old Hoss Radbourn+ (32) | 50 | 1887 | 425.0 | R | |
| Amos Rusie+ (23) | 50 | 1894 | 444.0 | R | |
| Jim Whitney (27) | 50 | 1885 | 441.1 | R | |
| 147. | Ice Box Chamberlain (24) | 49 | 1892 | 406.1 | R |
| Bobby Mathews (32) | 49 | 1884 | 430.2 | R | |
| Jouett Meekin (27) | 49 | 1894 | 418.0 | R | |
| Tony Mullane (24) | 49 | 1883 | 460.2 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Old Hoss Radbourn+ (30) | 49 | 1885 | 445.2 | R | |
| Dupee Shaw (26) | 49 | 1885 | 399.2 | L | |
| Scott Stratton (20) | 49 | 1890 | 431.0 | R | |
| Ed Walsh+ (27) | 49 | 1908 | 464.0 | R | |
| Gus Weyhing (25) | 49 | 1892 | 469.2 | R | |
| Wilbur Wood (30) | 49 | 1972 | 376.2 | L | |
| Cy Young+ (25) | 49 | 1892 | 453.0 | R | |
| 158. | Bob Barr (27) | 48 | 1884 | 413.0 | R |
| Jesse Duryea (29) | 48 | 1889 | 401.0 | R | |
| Frank Foreman (26) | 48 | 1889 | 414.0 | R | |
| Pud Galvin+ (30) | 48 | 1887 | 440.2 | R | |
| Guy Hecker (30) | 48 | 1886 | 420.2 | R | |
| Frank Killen (22) | 48 | 1893 | 415.0 | L | |
| Bobby Mathews (33) | 48 | 1885 | 422.1 | R | |
| Joe McGinnity+ (32) | 48 | 1903 | 434.0 | R | |
| Tony Mullane (28) | 48 | 1887 | 416.1 | R | |
| Kid Nichols+ (21) | 48 | 1891 | 425.1 | R | |
| Henry Porter (28) | 48 | 1886 | 424.0 | R | |
| Jack Stivetts (24) | 48 | 1892 | 415.2 | R | |
| Jim Whitney (24) | 48 | 1882 | 420.0 | R | |
| Wilbur Wood (31) | 48 | 1973 | 359.1 | L | |
| 172. | George Cobb (26) | 47 | 1892 | 394.1 | L |
| Charlie Ferguson (21) | 47 | 1884 | 416.2 | R | |
| George Haddock (24) | 47 | 1891 | 379.2 | R | |
| Silver King (24) | 47 | 1892 | 410.1 | R | |
| Tony Mullane (32) | 47 | 1891 | 426.1 | R | |
| Kid Nichols+ (20) | 47 | 1890 | 424.0 | R | |
| Amos Rusie+ (24) | 47 | 1895 | 393.1 | R | |
| Harry Staley (22) | 47 | 1889 | 420.0 | R | |
| Harry Staley (23) | 47 | 1890 | 396.2 | R | |
| Park Swartzel (23) | 47 | 1889 | 410.1 | R | |
| Jack Taylor (25) | 47 | 1898 | 397.1 | R | |
| Mickey Welch+ (28) | 47 | 1888 | 425.1 | R | |
| Gus Weyhing (21) | 47 | 1888 | 404.0 | R | |
| Jim Whitney (29) | 47 | 1887 | 404.2 | R | |
| George Weidman (22) | 47 | 1883 | 402.1 | R | |
| Cy Young+ (27) | 47 | 1894 | 408.2 | R | |
| 188. | Al Atkinson (23) | 46 | 1884 | 393.2 | R |
| Charlie Buffinton (27) | 46 | 1888 | 400.1 | R | |
| Ice Box Chamberlain (23) | 46 | 1891 | 405.2 | R | |
| Dave Davenport (25) | 46 | 1915 | 392.2 | R | |
| Dave Foutz (28) | 46 | 1885 | 407.2 | R | |
| Pretzels Getzien (24) | 46 | 1888 | 404.0 | R | |
| Egyptian Healy (23) | 46 | 1890 | 389.0 | R | |
| Tim Keefe+ (28) | 46 | 1885 | 400.0 | R | |
| Christy Mathewson+ (23) | 46 | 1904 | 367.2 | R | |
| Sadie McMahon (24) | 46 | 1892 | 397.0 | R | |
| Kid Nichols+ (24) | 46 | 1894 | 407.0 | R | |
| Hank O'Day+ (28) | 46 | 1888 | 403.0 | R | |
| Lee Richmond (25) | 46 | 1882 | 411.0 | L | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Jack Stivetts (22) | 46 | 1890 | 419.1 | R | |
| Tom Vickery (23) | 46 | 1890 | 382.0 | R | |
| Rube Waddell+ (27) | 46 | 1904 | 383.0 | L | |
| Ed Walsh+ (26) | 46 | 1907 | 422.1 | R | |
| Sam Weaver (27) | 46 | 1883 | 400.2 | R | |
| Gus Weyhing (23) | 46 | 1890 | 390.0 | R | |
| Vic Willis+ (26) | 46 | 1902 | 410.0 | R | |
| Cy Young+ (24) | 46 | 1891 | 423.2 | R | |
| Cy Young+ (26) | 46 | 1893 | 422.2 | R | |
| Cy Young+ (29) | 46 | 1896 | 414.1 | R | |
| 211. | Grover Alexander+ (29) | 45 | 1916 | 389.0 | R |
| Al Atkinson (25) | 45 | 1886 | 396.2 | R | |
| Jersey Bakley (20) | 45 | 1884 | 394.2 | R | |
| Tommy Bond (20) | 45 | 1876 | 408.0 | R | |
| Henry Boyle (28) | 45 | 1889 | 378.2 | R | |
| Dan Casey (24) | 45 | 1887 | 390.1 | L | |
| Pete Conway (21) | 45 | 1888 | 391.0 | R | |
| Billy Crowell (21) | 45 | 1887 | 389.1 | R | |
| Charlie Ferguson (22) | 45 | 1885 | 405.0 | R | |
| Charlie Ferguson (23) | 45 | 1886 | 395.2 | R | |
| Hank Gastright (25) | 45 | 1890 | 401.1 | R | |
| Kid Gleason (26) | 45 | 1892 | 400.0 | R | |
| Kid Gleason (27) | 45 | 1893 | 380.1 | R | |
| Fred Goldsmith (26) | 45 | 1882 | 405.0 | R | |
| Fred Goldsmith (27) | 45 | 1883 | 383.1 | R | |
| Ad Gumbert (24) | 45 | 1892 | 382.2 | R | |
| John Harkins (25) | 45 | 1884 | 391.0 | R | |
| Tim Keefe+ (24) | 45 | 1881 | 403.0 | R | |
| Tim Keefe+ (32) | 45 | 1889 | 364.0 | R | |
| Mickey Lolich (30) | 45 | 1971 | 376.0 | L | |
| Jumbo McGinnis (28) | 45 | 1882 | 388.1 | ||
| Jumbo McGinnis (29) | 45 | 1883 | 382.2 | ||
| Win Mercer (22) | 45 | 1896 | 366.1 | R | |
| Jack Powell (29) | 45 | 1904 | 390.1 | R | |
| Billy Rhines (21) | 45 | 1890 | 401.1 | R | |
| George Weidman (21) | 45 | 1882 | 411.0 | R | |
| 237. | Grover Alexander+ (30) | 44 | 1917 | 388.0 | R |
| George Bradley (24) | 44 | 1877 | 394.0 | R | |
| Dan Casey (23) | 44 | 1886 | 369.0 | L | |
| John Clarkson+ (28) | 44 | 1890 | 383.0 | R | |
| John Clarkson+ (30) | 44 | 1892 | 389.0 | R | |
| Larry Corcoran (21) | 44 | 1881 | 396.2 | R | |
| Ed Crane (29) | 44 | 1891 | 366.2 | R | |
| Pretzels Getzien (25) | 44 | 1889 | 349.0 | R | |
| Kid Gleason (25) | 44 | 1891 | 418.0 | R | |
| Henry Gruber (26) | 44 | 1890 | 383.1 | R | |
| George Haddock (25) | 44 | 1892 | 381.1 | R | |
| Brickyard Kennedy (25) | 44 | 1893 | 382.2 | R | |
| Silver King (19) | 44 | 1887 | 390.0 | R | |
| Silver King (23) | 44 | 1891 | 384.1 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Bobby Mathews (31) | 44 | 1883 | 381.0 | R | |
| Christy Mathewson+ (27) | 44 | 1908 | 390.2 | R | |
| Joe McGinnity+ (33) | 44 | 1904 | 408.0 | R | |
| George Mullin (23) | 44 | 1904 | 382.1 | R | |
| Kid Nichols+ (23) | 44 | 1893 | 425.0 | R | |
| Phil Niekro+ (40) | 44 | 1979 | 342.0 | R | |
| Dupee Shaw (27) | 44 | 1886 | 385.2 | L | |
| Adonis Terry (25) | 44 | 1890 | 370.0 | R | |
| George Uhle (24) | 44 | 1923 | 357.2 | R | |
| Jim Whitney (28) | 44 | 1886 | 393.0 | R | |
| 261. | Theodore Breitenstein (27) | 43 | 1896 | 339.2 | L |
| Charlie Buffinton (28) | 43 | 1889 | 380.0 | R | |
| Charlie Buffinton (30) | 43 | 1891 | 363.2 | R | |
| Bill Carrick (25) | 43 | 1899 | 361.2 | R | |
| Bob Caruthers (22) | 43 | 1886 | 387.1 | R | |
| Bob Caruthers (24) | 43 | 1888 | 391.2 | R | |
| Hugh Daily (35) | 43 | 1883 | 378.2 | R | |
| Cy Falkenberg (34) | 43 | 1914 | 377.1 | R | |
| Pud Galvin+ (28) | 43 | 1885 | 372.1 | R | |
| Pretzels Getzien (22) | 43 | 1886 | 386.2 | R | |
| Pink Hawley (23) | 43 | 1896 | 378.0 | R | |
| Hardie Henderson (20) | 43 | 1883 | 367.1 | R | |
| Tom Lovett (27) | 43 | 1891 | 365.2 | R | |
| Jack Lynch (28) | 43 | 1885 | 379.0 | R | |
| Joe McGinnity+ (30) | 43 | 1901 | 382.0 | R | |
| Win Mercer (23) | 43 | 1897 | 342.0 | R | |
| Kid Nichols+ (25) | 43 | 1895 | 390.2 | R | |
| Kid Nichols+ (26) | 43 | 1896 | 372.1 | R | |
| Phil Niekro+ (38) | 43 | 1977 | 330.1 | R | |
| Eddie Plank+ (28) | 43 | 1904 | 357.1 | L | |
| Jack Powell (24) | 43 | 1899 | 373.0 | R | |
| Billy Rhines (22) | 43 | 1891 | 372.2 | R | |
| Dick Rudolph (27) | 43 | 1915 | 341.1 | R | |
| Cy Seymour (25) | 43 | 1898 | 356.2 | L | |
| Luther Taylor (26) | 43 | 1901 | 353.1 | R | |
| Sam Weaver (22) | 43 | 1878 | 383.0 | R | |
| Vic Willis+ (28) | 43 | 1904 | 350.0 | R | |
| Wilbur Wood (33) | 43 | 1975 | 291.1 | L | |
| Cy Young+ (35) | 43 | 1902 | 384.2 | R | |
| 290. | Grover Alexander+ (28) | 42 | 1915 | 376.1 | R |
| Stan Bahnsen (28) | 42 | 1973 | 282.1 | R | |
| Theodore Breitenstein (24) | 42 | 1893 | 382.2 | L | |
| Dan Casey (27) | 42 | 1890 | 360.2 | L | |
| Jack Chesbro+ (32) | 42 | 1906 | 325.0 | R | |
| Ed Crane (30) | 42 | 1892 | 364.1 | R | |
| Bert Cunningham (32) | 42 | 1898 | 362.0 | R | |
| George Cuppy (22) | 42 | 1892 | 376.0 | R | |
| Bill Dinneen (26) | 42 | 1902 | 371.1 | R | |
| Red Donahue (24) | 42 | 1897 | 348.0 | R | |
| Don Drysdale+ (26) | 42 | 1963 | 315.1 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Don Drysdale+ (28) | 42 | 1965 | 308.1 | R | |
| Bob Feller+ (27) | 42 | 1946 | 371.1 | R | |
| Bob Friend (25) | 42 | 1956 | 314.1 | R | |
| Pretzels Getzien (23) | 42 | 1887 | 366.2 | R | |
| Noodles Hahn (22) | 42 | 1901 | 375.1 | L | |
| Fergie Jenkins+ (26) | 42 | 1969 | 311.1 | R | |
| Walter Johnson+ (22) | 42 | 1910 | 370.0 | R | |
| Jim Kaat+ (26) | 42 | 1965 | 264.1 | L | |
| Tim Keefe+ (25) | 42 | 1882 | 376.0 | R | |
| Doc Landis (27) | 42 | 1882 | 359.0 | ||
| Mickey Lolich (32) | 42 | 1973 | 308.2 | L | |
| Christy Mathewson+ (22) | 42 | 1903 | 366.1 | R | |
| Jim McCormick (29) | 42 | 1886 | 347.2 | R | |
| James McJames (23) | 42 | 1898 | 374.0 | R | |
| George McQuillan (23) | 42 | 1908 | 359.2 | R | |
| Tony Mullane (29) | 42 | 1888 | 380.1 | R | |
| George Mullin (26) | 42 | 1907 | 357.1 | R | |
| Kid Nichols+ (28) | 42 | 1898 | 388.0 | R | |
| Phil Niekro+ (39) | 42 | 1978 | 334.1 | R | |
| Jack Quinn (30) | 42 | 1914 | 342.2 | R | |
| Jack Sanford (34) | 42 | 1963 | 284.1 | R | |
| Pete Schneider (21) | 42 | 1917 | 333.2 | R | |
| Ed Stein (22) | 42 | 1892 | 377.1 | R | |
| Fred Toney (28) | 42 | 1917 | 339.2 | R | |
| Lee Viau (21) | 42 | 1888 | 387.2 | R | |
| Lee Viau (22) | 42 | 1889 | 373.0 | R | |
| Gus Weyhing (31) | 42 | 1898 | 361.0 | R | |
| Wilbur Wood (29) | 42 | 1971 | 334.0 | L | |
| Wilbur Wood (32) | 42 | 1974 | 320.1 | L | |
| Cy Young+ (32) | 42 | 1899 | 369.1 | R | |
| Irv Young (27) | 42 | 1905 | 378.0 | L | |
| 332. | Stan Bahnsen (27) | 41 | 1972 | 252.1 | R |
| Jim Bibby (29) | 41 | 1974 | 264.0 | R | |
| Charlie Buffinton (22) | 41 | 1883 | 333.0 | R | |
| Jim Bunning+ (34) | 41 | 1966 | 314.0 | R | |
| Steve Carlton+ (27) | 41 | 1972 | 346.1 | L | |
| Bill Carrick (26) | 41 | 1900 | 341.2 | R | |
| Joe Coleman (27) | 41 | 1974 | 285.2 | R | |
| Don Drysdale+ (25) | 41 | 1962 | 314.1 | R | |
| Frank Dwyer (23) | 41 | 1891 | 375.0 | R | |
| Frank Foreman (28) | 41 | 1891 | 345.1 | R | |
| Clark Griffith+ (25) | 41 | 1895 | 353.0 | R | |
| Bill Hands (29) | 41 | 1969 | 300.0 | R | |
| Bob Harmon (23) | 41 | 1911 | 348.0 | R | |
| Bill Hart (30) | 41 | 1896 | 336.0 | R | |
| Pink Hawley (21) | 41 | 1894 | 392.2 | R | |
| Egyptian Healy (19) | 41 | 1886 | 353.2 | R | |
| Egyptian Healy (20) | 41 | 1887 | 341.0 | R | |
| Catfish Hunter+ (28) | 41 | 1974 | 318.1 | R | |
| Fergie Jenkins+ (31) | 41 | 1974 | 328.1 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Oscar Jones (24) | 41 | 1904 | 377.0 | R | |
| Jim Kaat+ (27) | 41 | 1966 | 304.2 | L | |
| Jim Kaat+ (36) | 41 | 1975 | 303.2 | L | |
| John Keefe (22) | 41 | 1890 | 352.1 | L | |
| Brickyard Kennedy (26) | 41 | 1894 | 360.2 | R | |
| Frank Killen (26) | 41 | 1897 | 337.1 | L | |
| Sam Kimber (31) | 41 | 1884 | 361.1 | R | |
| John Kirby (21) | 41 | 1886 | 325.0 | R | |
| Sandy Koufax+ (29) | 41 | 1965 | 335.2 | L | |
| Sandy Koufax+ (30) | 41 | 1966 | 323.0 | L | |
| Mickey Lolich (31) | 41 | 1972 | 327.1 | L | |
| Mickey Lolich (33) | 41 | 1974 | 308.0 | L | |
| Tom Lovett (26) | 41 | 1890 | 372.0 | R | |
| Jim McCormick (26) | 41 | 1883 | 342.0 | R | |
| Joe McGinnity+ (28) | 41 | 1899 | 366.1 | R | |
| Denny McLain (24) | 41 | 1968 | 336.0 | R | |
| Denny McLain (25) | 41 | 1969 | 325.0 | R | |
| Jouett Meekin (29) | 41 | 1896 | 334.1 | R | |
| Frank Mountain (24) | 41 | 1884 | 360.2 | R | |
| George Mullin (24) | 41 | 1905 | 347.2 | R | |
| Darby O'Brien (22) | 41 | 1889 | 346.2 | R | |
| Claude Osteen (29) | 41 | 1969 | 321.0 | L | |
| Gaylord Perry+ (31) | 41 | 1970 | 328.2 | R | |
| Gaylord Perry+ (34) | 41 | 1973 | 344.0 | R | |
| Eddie Plank+ (29) | 41 | 1905 | 346.2 | L | |
| Jack Powell (23) | 41 | 1898 | 342.0 | R | |
| Robin Roberts+ (26) | 41 | 1953 | 346.2 | R | |
| Nolan Ryan+ (27) | 41 | 1974 | 332.2 | R | |
| Bill Stemmyer (21) | 41 | 1886 | 348.2 | R | |
| Don Sutton+ (24) | 41 | 1969 | 293.1 | R | |
| Jack Taylor (23) | 41 | 1896 | 359.0 | R | |
| Jeff Tesreau (26) | 41 | 1914 | 322.1 | R | |
| Bill Voiselle (25) | 41 | 1944 | 312.2 | R | |
| Ed Walsh+ (31) | 41 | 1912 | 393.0 | R | |
| Sam Weaver (26) | 41 | 1882 | 371.0 | R | |
| Mickey Welch+ (29) | 41 | 1889 | 375.0 | R | |
| Vic Willis+ (29) | 41 | 1905 | 342.0 | R | |
| Bill Wise (23) | 41 | 1884 | 364.1 | R | |
| Cy Young+ (31) | 41 | 1898 | 377.2 | R | |
| Cy Young+ (34) | 41 | 1901 | 371.1 | R | |
| Cy Young+ (37) | 41 | 1904 | 380.0 | R | |
| Irv Young (28) | 41 | 1906 | 358.1 | L | |
| 393. | Grover Alexander+ (33) | 40 | 1920 | 363.1 | R |
| Mark Baldwin (29) | 40 | 1893 | 333.2 | R | |
| Jack Billingham (30) | 40 | 1973 | 293.1 | R | |
| Vida Blue (24) | 40 | 1974 | 282.1 | L | |
| Bert Blyleven+ (22) | 40 | 1973 | 325.0 | R | |
| Tom Bradley (25) | 40 | 1972 | 260.0 | R | |
| Jim Bunning+ (35) | 40 | 1967 | 302.1 | R | |
| Dick Burns (20) | 40 | 1884 | 329.2 | L | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Steve Carlton+ (28) | 40 | 1973 | 293.1 | L | |
| Kid Carsey (22) | 40 | 1895 | 342.1 | R | |
| George Caster (30) | 40 | 1938 | 281.1 | R | |
| Larry Cheney (28) | 40 | 1914 | 311.1 | R | |
| Jim Clancy (26) | 40 | 1982 | 266.2 | R | |
| Dad Clarke (31) | 40 | 1896 | 351.0 | R | |
| Joe Coleman (26) | 40 | 1973 | 288.1 | R | |
| Jack Coombs (28) | 40 | 1911 | 336.2 | R | |
| Stan Coveleski+ (31) | 40 | 1921 | 315.0 | R | |
| Mike Cuellar (33) | 40 | 1970 | 297.2 | L | |
| George Cuppy (25) | 40 | 1895 | 353.0 | R | |
| George Cuppy (26) | 40 | 1896 | 358.0 | R | |
| Chuck Dobson (26) | 40 | 1970 | 267.0 | R | |
| Denny Driscoll (27) | 40 | 1883 | 336.1 | L | |
| Don Drysdale+ (27) | 40 | 1964 | 321.1 | R | |
| Don Drysdale+ (29) | 40 | 1966 | 273.2 | R | |
| Bob Feller+ (22) | 40 | 1941 | 343.0 | R | |
| Mike Flanagan (26) | 40 | 1978 | 281.1 | L | |
| Pud Galvin+ (32) | 40 | 1889 | 341.0 | R | |
| Pretzels Getzien (26) | 40 | 1890 | 350.0 | R | |
| Bob Groom (27) | 40 | 1912 | 316.0 | R | |
| Henry Gruber (27) | 40 | 1891 | 348.2 | R | |
| Ken Holtzman (27) | 40 | 1973 | 297.1 | L | |
| Charlie Hough (39) | 40 | 1987 | 285.1 | R | |
| Mickey Hughes (21) | 40 | 1888 | 363.0 | R | |
| Catfish Hunter+ (24) | 40 | 1970 | 262.1 | R | |
| Bill Hutchison (33) | 40 | 1893 | 348.1 | R | |
| Fergie Jenkins+ (25) | 40 | 1968 | 308.0 | R | |
| Walter Johnson+ (26) | 40 | 1914 | 371.2 | R | |
| Randy Jones (26) | 40 | 1976 | 315.1 | L | |
| Brickyard Kennedy (29) | 40 | 1897 | 343.1 | R | |
| Matt Kilroy (22) | 40 | 1888 | 321.0 | L | |
| Sandy Koufax+ (27) | 40 | 1963 | 311.0 | L | |
| Dennis Leonard (27) | 40 | 1978 | 294.2 | R | |
| Juan Marichal+ (25) | 40 | 1963 | 321.1 | R | |
| Al Mays (21) | 40 | 1886 | 350.0 | R | |
| Jumbo McGinnis (30) | 40 | 1884 | 354.1 | ||
| Sadie McMahon (25) | 40 | 1893 | 346.1 | R | |
| Dave McNally (26) | 40 | 1969 | 268.2 | L | |
| Dave McNally (27) | 40 | 1970 | 296.0 | L | |
| Andy Messersmith (29) | 40 | 1975 | 321.2 | R | |
| Mike Morrison (20) | 40 | 1887 | 316.2 | R | |
| George Mullin (25) | 40 | 1906 | 330.0 | R | |
| Bobo Newsom (30) | 40 | 1938 | 329.2 | R | |
| Kid Nichols+ (27) | 40 | 1897 | 368.0 | R | |
| Hank O'Day+ (24) | 40 | 1884 | 326.2 | R | |
| Claude Osteen (25) | 40 | 1965 | 287.0 | L | |
| Jim Palmer+ (30) | 40 | 1976 | 315.0 | R | |
| George Pechiney (24) | 40 | 1886 | 330.1 | R | |
| Gaylord Perry+ (33) | 40 | 1972 | 342.2 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Jim Perry (34) | 40 | 1970 | 278.2 | R | |
| Togie Pittinger (30) | 40 | 1902 | 389.1 | R | |
| Eddie Plank+ (27) | 40 | 1903 | 336.0 | L | |
| Eddie Plank+ (31) | 40 | 1907 | 343.2 | L | |
| Johnny Podres (29) | 40 | 1962 | 255.0 | L | |
| Henry Porter (29) | 40 | 1887 | 339.2 | R | |
| Toad Ramsey (23) | 40 | 1888 | 342.1 | L | |
| Toad Ramsey (25) | 40 | 1890 | 348.2 | L | |
| Jerry Reuss (24) | 40 | 1973 | 279.1 | L | |
| Steve Rogers (27) | 40 | 1977 | 301.2 | R | |
| Babe Ruth+ (21) | 40 | 1916 | 323.2 | L | |
| Ben Sanders (25) | 40 | 1890 | 346.2 | R | |
| Chris Short (27) | 40 | 1965 | 297.1 | L | |
| Bill Singer (25) | 40 | 1969 | 315.2 | R | |
| Bill Singer (29) | 40 | 1973 | 315.2 | R | |
| Elmer Smith (20) | 40 | 1888 | 348.1 | L | |
| Frank Smith (29) | 40 | 1909 | 365.0 | R | |
| Ed Stein (24) | 40 | 1894 | 350.0 | R | |
| Scott Stratton (22) | 40 | 1892 | 351.2 | R | |
| Don Sutton+ (29) | 40 | 1974 | 276.0 | R | |
| Dick Tidrow (26) | 40 | 1973 | 274.2 | R | |
| Dizzy Trout (29) | 40 | 1944 | 352.1 | R | |
| George Uhle (23) | 40 | 1922 | 287.1 | R | |
| Mickey Welch+ (21) | 40 | 1881 | 368.0 | R | |
| Mickey Welch+ (27) | 40 | 1887 | 346.0 | R | |
| Gus Weyhing (26) | 40 | 1893 | 345.1 | R | |
| Lefty Williams (26) | 40 | 1919 | 297.0 | L | |
| Cy Young+ (28) | 40 | 1895 | 369.2 | R | |
| 479. | Grover Alexander+ (27) | 39 | 1914 | 355.0 | R |
| Mark Baldwin (23) | 39 | 1887 | 334.0 | R | |
| Rube Benton (22) | 39 | 1912 | 302.0 | L | |
| Vern Bickford (29) | 39 | 1950 | 311.2 | R | |
| Vida Blue (21) | 39 | 1971 | 312.0 | L | |
| Henry Boyle (24) | 39 | 1885 | 366.2 | R | |
| Tom Bradley (24) | 39 | 1971 | 285.2 | R | |
| Theodore Breitenstein (28) | 39 | 1897 | 320.1 | L | |
| Tom Browning (26) | 39 | 1986 | 243.1 | L | |
| Ron Bryant (25) | 39 | 1973 | 270.0 | L | |
| Jim Bunning+ (32) | 39 | 1964 | 284.1 | R | |
| Jim Bunning+ (33) | 39 | 1965 | 291.0 | R | |
| Lew Burdette (32) | 39 | 1959 | 289.2 | R | |
| Ray Burris (26) | 39 | 1977 | 221.0 | R | |
| Steve Carlton+ (29) | 39 | 1974 | 291.0 | L | |
| Bob Caruthers (23) | 39 | 1887 | 341.0 | R | |
| Dean Chance (26) | 39 | 1967 | 283.2 | R | |
| Dean Chance (27) | 39 | 1968 | 292.0 | R | |
| Watson Clark (27) | 39 | 1929 | 279.0 | L | |
| Joe Coleman (25) | 39 | 1972 | 280.0 | R | |
| Larry Corcoran (22) | 39 | 1882 | 355.2 | R | |
| Harry Coveleski (30) | 39 | 1916 | 324.1 | L | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| General Crowder (33) | 39 | 1932 | 327.0 | R | |
| Mike Cuellar (32) | 39 | 1969 | 290.2 | L | |
| Hooks Dauss (33) | 39 | 1923 | 316.0 | R | |
| Dave Davenport (27) | 39 | 1917 | 280.2 | R | |
| George Derby (24) | 39 | 1882 | 362.0 | R | |
| Pat Dobson (32) | 39 | 1974 | 281.0 | R | |
| Frank Dwyer (26) | 39 | 1894 | 348.0 | R | |
| George Earnshaw (30) | 39 | 1930 | 296.0 | R | |
| Howard Ehmke (29) | 39 | 1923 | 316.2 | R | |
| Sammy Ellis (24) | 39 | 1965 | 263.2 | R | |
| John Ewing (26) | 39 | 1889 | 331.0 | R | |
| Red Faber+ (31) | 39 | 1920 | 319.0 | R | |
| Red Faber+ (32) | 39 | 1921 | 330.2 | R | |
| Whitey Ford+ (32) | 39 | 1961 | 283.0 | L | |
| Fred Goldsmith (25) | 39 | 1881 | 330.0 | R | |
| Dave Goltz (28) | 39 | 1977 | 303.0 | R | |
| Mudcat Grant (29) | 39 | 1965 | 270.1 | R | |
| Ross Grimsley (24) | 39 | 1974 | 295.2 | L | |
| Pink Hawley (24) | 39 | 1897 | 311.1 | R | |
| Kirby Higbe (26) | 39 | 1941 | 298.0 | R | |
| Bill Hill (21) | 39 | 1896 | 319.2 | L | |
| Ken Holtzman (23) | 39 | 1969 | 261.1 | L | |
| Catfish Hunter+ (29) | 39 | 1975 | 328.0 | R | |
| Larry Jackson (34) | 39 | 1965 | 257.1 | R | |
| Fergie Jenkins+ (27) | 39 | 1970 | 313.0 | R | |
| Fergie Jenkins+ (28) | 39 | 1971 | 325.0 | R | |
| Walter Johnson+ (27) | 39 | 1915 | 336.2 | R | |
| Randy Jones (29) | 39 | 1979 | 263.0 | L | |
| Jim Kaat+ (35) | 39 | 1974 | 277.1 | L | |
| Brickyard Kennedy (30) | 39 | 1898 | 339.1 | R | |
| Frank Killen (27) | 39 | 1898 | 306.0 | L | |
| Ron Kline (24) | 39 | 1956 | 264.0 | R | |
| Gus Krock (22) | 39 | 1888 | 339.2 | R | |
| Sam Leever (27) | 39 | 1899 | 379.0 | R | |
| Mickey Lolich (29) | 39 | 1970 | 272.2 | L | |
| Jim Lonborg (25) | 39 | 1967 | 273.1 | R | |
| Jim Lonborg (32) | 39 | 1974 | 283.0 | R | |
| Art Mahaffey (24) | 39 | 1962 | 274.0 | R | |
| Rick Mahler (31) | 39 | 1985 | 266.2 | R | |
| Rick Mahler (32) | 39 | 1986 | 237.2 | R | |
| Dennis Martínez (25) | 39 | 1979 | 292.1 | R | |
| Dennis Martínez (28) | 39 | 1982 | 252.0 | R | |
| Sam McDowell (27) | 39 | 1970 | 305.0 | L | |
| Joe McGinnity+ (31) | 39 | 1902 | 351.2 | R | |
| Stoney McGlynn (35) | 39 | 1907 | 352.1 | R | |
| James McJames (22) | 39 | 1897 | 323.2 | R | |
| Win Mercer (20) | 39 | 1894 | 339.1 | R | |
| Andy Messersmith (28) | 39 | 1974 | 292.1 | R | |
| Carl Morton (31) | 39 | 1975 | 277.2 | R | |
| Tony Mullane (34) | 39 | 1893 | 367.0 | R | |
| Rank | Player (age that year) | Games Started | Year | IP | Throws |
| Tricky Nichols (26) | 39 | 1877 | 350.0 | R | |
| Phil Niekro+ (35) | 39 | 1974 | 302.1 | R | |
| Billy O'Dell (29) | 39 | 1962 | 280.2 | L | |
| Al Orth (33) | 39 | 1906 | 338.2 | R | |
| Claude Osteen (27) | 39 | 1967 | 288.1 | L | |
| Orval Overall (24) | 39 | 1905 | 318.0 | R | |
| Jim Palmer+ (24) | 39 | 1970 | 305.0 | R | |
| Jim Palmer+ (31) | 39 | 1977 | 319.0 | R | |
| Casey Patten (30) | 39 | 1904 | 357.2 | L | |
| Gaylord Perry+ (30) | 39 | 1969 | 325.1 | R | |
| Jim Perry (35) | 39 | 1971 | 270.0 | R | |
| Togie Pittinger (31) | 39 | 1903 | 351.2 | R | |
| Jack Powell (27) | 39 | 1902 | 328.1 | R | |
| J.R. Richard (26) | 39 | 1976 | 291.0 | R | |
| Robin Roberts+ (23) | 39 | 1950 | 304.1 | R | |
| Robin Roberts+ (24) | 39 | 1951 | 315.0 | R | |
| Nap Rucker (25) | 39 | 1910 | 320.1 | L | |
| Nolan Ryan+ (25) | 39 | 1972 | 284.0 | R | |
| Nolan Ryan+ (26) | 39 | 1973 | 326.0 | R | |
| Nolan Ryan+ (29) | 39 | 1976 | 284.1 | R | |
| Johnny Sain (30) | 39 | 1948 | 314.2 | R | |
| Ben Sanders (24) | 39 | 1889 | 349.2 | R | |
| Chris Short (28) | 39 | 1966 | 272.0 | L | |
| Warren Spahn+ (29) | 39 | 1950 | 293.0 | L | |
| Jack Stivetts (26) | 39 | 1894 | 338.0 | R | |
| Mel Stottlemyre (27) | 39 | 1969 | 303.0 | R | |
| Jack Taylor (25) | 39 | 1899 | 354.2 | R | |
| Jack Taylor (30) | 39 | 1904 | 352.0 | R | |
| Adonis Terry (24) | 39 | 1889 | 326.0 | R | |
| Ralph Terry (26) | 39 | 1962 | 298.2 | R | |
| Jeff Tesreau (27) | 39 | 1915 | 306.0 | R | |
| Mike Torrez (29) | 39 | 1976 | 266.1 | R | |
| Jake Weimer (32) | 39 | 1906 | 304.2 | L | |
| Jim Whitney (30) | 39 | 1888 | 325.0 | R | |
| Clyde Wright (29) | 39 | 1970 | 260.2 | L |
