Single-Season Leaders & Records for Earned Run Average
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| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
|---|---|---|---|---|---|
| 1. | Robert Keyes | 0.643 | 1944 | 28.0 | L |
| 2. | Roy Parnell (28) | 0.833 | 1932 | 54.0 | R |
| 3. | Tim Keefe+ (23) | 0.857 | 1880 | 105.0 | R |
| 4. | Garnett Blair (23) | 0.957 | 1945 | 47.0 | R |
| 5. | Dutch Leonard (22) | 0.961 | 1914 | 224.2 | L |
| 6. | Mordecai Brown+ (29) | 1.038 | 1906 | 277.1 | R |
| Gready McKinnis (27) | 1.038 | 1941 | 34.2 | L | |
| 8. | Satchel Paige+ (37) | 1.098 | 1944 | 98.1 | R |
| 9. | Bob Gibson+ (32) | 1.123 | 1968 | 304.2 | R |
| 10. | Christy Mathewson+ (28) | 1.144 | 1909 | 275.1 | R |
| 11. | Walter Johnson+ (25) | 1.145 | 1913 | 346.0 | R |
| 12. | Jack Pfiester (29) | 1.154 | 1907 | 195.0 | L |
| 13. | Addie Joss+ (28) | 1.163 | 1908 | 325.0 | R |
| 14. | Carl Lundgren (27) | 1.174 | 1907 | 207.0 | R |
| 15. | Denny Driscoll (26) | 1.209 | 1882 | 201.0 | L |
| 16. | Grover Alexander+ (28) | 1.220 | 1915 | 376.1 | R |
| 17. | George Bradley (23) | 1.225 | 1876 | 573.0 | R |
| 18. | Cy Young+ (41) | 1.264 | 1908 | 299.0 | R |
| 19. | Ed Walsh+ (29) | 1.266 | 1910 | 369.2 | R |
| 20. | Walter Johnson+ (30) | 1.270 | 1918 | 326.0 | R |
| 21. | Christy Mathewson+ (24) | 1.276 | 1905 | 338.2 | R |
| 22. | Slim Jones (21) | 1.286 | 1934 | 203.0 | L |
| Satchel Paige+ (39) | 1.286 | 1946 | 35.0 | R | |
| George Walker (25) | 1.286 | 1940 | 49.0 | R | |
| 25. | Jack Taylor (28) | 1.295 | 1902 | 333.2 | R |
| 26. | Guy Hecker (26) | 1.298 | 1882 | 104.0 | R |
| 27. | Jack Coombs (27) | 1.300 | 1910 | 353.0 | R |
| 28. | Mordecai Brown+ (32) | 1.313 | 1909 | 342.2 | R |
| 29. | Gene Richardson (19) | 1.333 | 1947 | 27.0 | L |
| 30. | Walter Johnson+ (22) | 1.362 | 1910 | 370.0 | R |
| 31. | Angel García (23) | 1.364 | 1946 | 33.0 | L |
| 32. | George Bradley (27) | 1.378 | 1880 | 196.0 | R |
| 33. | Old Hoss Radbourn+ (29) | 1.379 | 1884 | 678.2 | R |
| 34. | Johnny Wright (28) | 1.380 | 1945 | 45.2 | R |
| 35. | Walter Johnson+ (24) | 1.390 | 1912 | 369.0 | R |
| 36. | Mordecai Brown+ (30) | 1.391 | 1907 | 233.0 | R |
| 37. | Harry Krause (20) | 1.394 | 1909 | 213.0 | L |
| 38. | Ed Walsh+ (28) | 1.407 | 1909 | 230.1 | R |
| 39. | Ed Walsh+ (27) | 1.416 | 1908 | 464.0 | R |
| 40. | Ed Reulbach (22) | 1.419 | 1905 | 291.2 | R |
| 41. | Orval Overall (28) | 1.421 | 1909 | 285.0 | R |
| 42. | Christy Mathewson+ (27) | 1.428 | 1908 | 390.2 | R |
| 43. | Fred Anderson (31) | 1.444 | 1917 | 162.0 | R |
| 44. | Mordecai Brown+ (31) | 1.470 | 1908 | 312.1 | R |
| 45. | Eugene Bremer (20) | 1.473 | 1937 | 55.0 | R |
| 46. | Rube Waddell+ (28) | 1.479 | 1905 | 328.2 | L |
| 47. | Smoky Joe Wood (25) | 1.487 | 1915 | 157.1 | R |
| 48. | Walter Johnson+ (31) | 1.488 | 1919 | 290.1 | R |
| 49. | Jack Pfiester (28) | 1.508 | 1906 | 250.2 | L |
| 50. | John Ward+ (18) | 1.509 | 1878 | 334.0 | R |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 51. | Jimmy Shields (22) | 1.512 | 1928 | 41.2 | R |
| 52. | Harry McCormick (26) | 1.516 | 1882 | 219.2 | R |
| 53. | Doc White (27) | 1.518 | 1906 | 219.1 | L |
| 54. | Leroy Matlock (28) | 1.521 | 1935 | 71.0 | L |
| 55. | George McQuillan (23) | 1.526 | 1908 | 359.2 | R |
| 56. | Dwight Gooden (20) | 1.529 | 1985 | 276.2 | R |
| 57. | Eddie Cicotte (33) | 1.532 | 1917 | 346.2 | R |
| 58. | Will White (27) | 1.538 | 1882 | 480.0 | R |
| 59. | Satchel Paige+ (27) | 1.545 | 1934 | 145.2 | R |
| 60. | Cy Morgan (31) | 1.548 | 1910 | 290.2 | R |
| 61. | Grover Alexander+ (29) | 1.550 | 1916 | 389.0 | R |
| Walter Johnson+ (27) | 1.550 | 1915 | 336.2 | R | |
| 63. | Bill Ricks (28) | 1.558 | 1948 | 52.0 | R |
| 64. | Howie Camnitz (26) | 1.559 | 1908 | 236.2 | R |
| Greg Maddux+ (28) | 1.559 | 1994 | 202.0 | R | |
| 66. | Jim Devlin (27) | 1.563 | 1876 | 622.0 | R |
| 67. | Hilton Smith+ (39) | 1.568 | 1946 | 51.2 | R |
| 68. | Tim Keefe+ (28) | 1.575 | 1885 | 400.0 | R |
| 69. | Fred Toney (26) | 1.576 | 1915 | 222.2 | R |
| 70. | Eddie Cicotte (29) | 1.578 | 1913 | 268.0 | R |
| 71. | Rube Marquard+ (29) | 1.580 | 1916 | 205.0 | L |
| 72. | Charles Bender+ (26) | 1.584 | 1910 | 250.0 | R |
| 73. | Max Manning (29) | 1.588 | 1948 | 113.1 | R |
| Barney Pelty (25) | 1.588 | 1906 | 260.2 | R | |
| 75. | Addie Joss+ (24) | 1.591 | 1904 | 192.1 | R |
| 76. | Ed Walsh+ (26) | 1.598 | 1907 | 422.1 | R |
| 77. | Luis Tiant (27) | 1.603 | 1968 | 258.1 | R |
| 78. | Joe McGinnity+ (33) | 1.610 | 1904 | 408.0 | R |
| 79. | Bill Foster+ (21) | 1.615 | 1925 | 78.0 | L |
| 80. | Ray Collins (23) | 1.619 | 1910 | 244.2 | L |
| 81. | Rube Waddell+ (27) | 1.621 | 1904 | 383.0 | L |
| 82. | Howie Camnitz (27) | 1.622 | 1909 | 283.0 | R |
| 83. | Cy Young+ (34) | 1.624 | 1901 | 371.1 | R |
| 84. | Donald Troy (17) | 1.627 | 1944 | 55.1 | R |
| 85. | Logan Hensley (31) | 1.628 | 1931 | 66.1 | R |
| 86. | Shane Bieber (25) | 1.629 | 2020 | 77.1 | R |
| 87. | Greg Maddux+ (29) | 1.631 | 1995 | 209.2 | R |
| 88. | Silver King (20) | 1.632 | 1888 | 584.2 | R |
| 89. | Spud Chandler (35) | 1.636 | 1943 | 253.0 | R |
| 90. | Ernie Shore (24) | 1.640 | 1915 | 247.0 | R |
| 91. | Ed Summers (23) | 1.645 | 1908 | 301.0 | R |
| 92. | Dean Chance (23) | 1.649 | 1964 | 278.1 | R |
| 93. | Walter Johnson+ (20) | 1.650 | 1908 | 256.1 | R |
| 94. | Ed Reulbach (23) | 1.651 | 1906 | 218.0 | R |
| 95. | Russ Ford (27) | 1.652 | 1910 | 299.2 | R |
| 96. | Roosevelt Davis (40) | 1.653 | 1945 | 32.2 | R |
| 97. | Charles Bender+ (25) | 1.656 | 1909 | 250.0 | R |
| 98. | Zack Greinke (31) | 1.657 | 2015 | 222.2 | R |
| Hilton Smith+ (30) | 1.657 | 1937 | 130.1 | R | |
| 100. | Carl Hubbell+ (30) | 1.662 | 1933 | 308.2 | L |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| Sam Leever (35) | 1.662 | 1907 | 216.2 | R | |
| 102. | Mickey Welch+ (25) | 1.665 | 1885 | 492.0 | R |
| 103. | Candy Cummings+ (27) | 1.667 | 1876 | 216.0 | R |
| 104. | Tommy Bond (20) | 1.676 | 1876 | 408.0 | R |
| 105. | Orval Overall (26) | 1.677 | 1907 | 268.1 | R |
| 106. | Ed Reulbach (24) | 1.688 | 1907 | 192.0 | R |
| Ford Smith (22) | 1.688 | 1941 | 26.2 | R | |
| 108. | Claude Hendrix (25) | 1.691 | 1914 | 362.0 | R |
| Nolan Ryan+ (34) | 1.691 | 1981 | 149.0 | R | |
| 110. | Jim McCormick (21) | 1.692 | 1878 | 117.0 | R |
| 111. | Smoky Joe Wood (20) | 1.693 | 1910 | 196.2 | R |
| 112. | Roy Partlow (30) | 1.694 | 1942 | 85.0 | L |
| 113. | Jacob deGrom (30) | 1.700 | 2018 | 217.0 | R |
| 114. | Bill Burns (28) | 1.701 | 1908 | 164.0 | L |
| Rube Foster (26) | 1.701 | 1914 | 211.2 | R | |
| 116. | Addie Joss+ (29) | 1.706 | 1909 | 242.2 | R |
| 117. | Ed Killian (32) | 1.713 | 1909 | 173.1 | L |
| 118. | Walter Johnson+ (26) | 1.719 | 1914 | 371.2 | R |
| 119. | Bullet Rogan+ (27) | 1.721 | 1921 | 204.0 | R |
| 120. | Doc White (30) | 1.722 | 1909 | 177.2 | L |
| 121. | Grover Alexander+ (32) | 1.723 | 1919 | 235.0 | R |
| Bill Doak (23) | 1.723 | 1914 | 256.0 | R | |
| Addie Joss+ (26) | 1.723 | 1906 | 282.0 | R | |
| 124. | Trevor Bauer (29) | 1.726 | 2020 | 73.0 | R |
| 125. | Leon Day+ (25) | 1.728 | 1942 | 83.1 | R |
| Sandy Koufax+ (30) | 1.728 | 1966 | 323.0 | L | |
| Barney Morris (35) | 1.728 | 1945 | 41.2 | R | |
| Hilton Smith+ (34) | 1.728 | 1941 | 83.1 | R | |
| 129. | Bob Ewing (34) | 1.731 | 1907 | 332.2 | R |
| 130. | Vic Willis+ (30) | 1.733 | 1906 | 322.0 | R |
| 131. | Sandy Koufax+ (28) | 1.735 | 1964 | 223.0 | L |
| 132. | Roy Partlow (27) | 1.736 | 1939 | 46.2 | L |
| Hippo Vaughn (30) | 1.736 | 1918 | 290.1 | L | |
| 134. | Charlie Chech (30) | 1.738 | 1908 | 165.2 | R |
| Bullet Rogan+ (31) | 1.738 | 1925 | 155.1 | R | |
| 136. | John Ward+ (20) | 1.739 | 1880 | 595.0 | R |
| 137. | Henry Boyle (23) | 1.740 | 1884 | 150.0 | R |
| 138. | Tim Keefe+ (31) | 1.741 | 1888 | 434.1 | R |
| 139. | Pedro Martinez+ (28) | 1.742 | 2000 | 217.0 | R |
| 140. | Ron Guidry (27) | 1.743 | 1978 | 273.2 | L |
| 141. | Carl Mays (25) | 1.744 | 1917 | 289.0 | R |
| Earl Moore (25) | 1.744 | 1903 | 247.2 | R | |
| 143. | Justin Verlander (39) | 1.749 | 2022 | 175.0 | R |
| 144. | Bill Byrd (40) | 1.751 | 1948 | 123.1 | R |
| 145. | Babe Ruth+ (21) | 1.752 | 1916 | 323.2 | L |
| 146. | Al Spalding+ (25) | 1.753 | 1876 | 528.2 | R |
| 147. | Fred Goldsmith (24) | 1.754 | 1880 | 210.1 | R |
| 148. | Henry Boyle (25) | 1.757 | 1886 | 210.0 | R |
| Everett Nelson | 1.757 | 1932 | 56.1 | R | |
| 150. | Tom Seaver+ (26) | 1.760 | 1971 | 286.1 | R |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 151. | Doc White (26) | 1.763 | 1905 | 260.1 | L |
| 152. | Eddie Plank+ (33) | 1.764 | 1909 | 265.1 | L |
| 153. | Noodles Hahn (23) | 1.766 | 1902 | 321.0 | L |
| 154. | Bob Rhoads (28) | 1.767 | 1908 | 270.0 | R |
| 155. | Jake Arrieta (29) | 1.769 | 2015 | 229.0 | R |
| 156. | Clayton Kershaw (26) | 1.770 | 2014 | 198.1 | L |
| Jack Powell (31) | 1.770 | 1906 | 244.0 | R | |
| 158. | Mort Cooper (29) | 1.776 | 1942 | 278.2 | R |
| Doc White (25) | 1.776 | 1904 | 228.0 | L | |
| 160. | Ed Killian (30) | 1.777 | 1907 | 314.0 | L |
| 161. | George Jefferson (21) | 1.780 | 1944 | 60.2 | R |
| 162. | Eddie Cicotte (32) | 1.781 | 1916 | 187.0 | R |
| 163. | Andy Coakley (25) | 1.782 | 1908 | 262.2 | R |
| Ed Reulbach (26) | 1.782 | 1909 | 262.2 | R | |
| 165. | Will White (23) | 1.788 | 1878 | 468.0 | R |
| 166. | Hippo Vaughn (31) | 1.790 | 1919 | 306.2 | L |
| 167. | Guy Hecker (28) | 1.798 | 1884 | 670.2 | R |
| 168. | Bob Rhoads (26) | 1.800 | 1906 | 315.0 | R |
| Frank Smith (29) | 1.800 | 1909 | 365.0 | R | |
| George Weidman (20) | 1.800 | 1881 | 115.0 | R | |
| 171. | Vean Gregg (26) | 1.802 | 1911 | 244.2 | L |
| 172. | King Cole (24) | 1.803 | 1910 | 239.2 | R |
| Bill Foster+ (22) | 1.803 | 1926 | 174.2 | L | |
| 174. | Sam McDowell (25) | 1.807 | 1968 | 269.0 | L |
| 175. | Stan Coveleski+ (27) | 1.810 | 1917 | 298.1 | R |
| Cy Morgan (30) | 1.810 | 1909 | 293.1 | R | |
| Hal Newhouser+ (24) | 1.810 | 1945 | 313.1 | L | |
| 178. | Dave Brown (23) | 1.816 | 1920 | 148.2 | L |
| 179. | Vida Blue (21) | 1.817 | 1971 | 312.0 | L |
| Dutch Ruether (25) | 1.817 | 1919 | 242.2 | L | |
| 181. | Russ Ford (31) | 1.819 | 1914 | 247.1 | R |
| 182. | Eddie Cicotte (35) | 1.820 | 1919 | 306.2 | R |
| 183. | Jack Chesbro+ (30) | 1.821 | 1904 | 454.2 | R |
| 184. | Stan Coveleski+ (28) | 1.823 | 1918 | 311.0 | R |
| 185. | Cy Young+ (38) | 1.824 | 1905 | 320.2 | R |
| 186. | Lew Richie (24) | 1.827 | 1908 | 157.2 | R |
| Hippo Vaughn (22) | 1.827 | 1910 | 221.2 | L | |
| 188. | Clayton Kershaw (25) | 1.831 | 2013 | 236.0 | L |
| Smoky Owens (30) | 1.831 | 1942 | 39.1 | R | |
| 190. | Grover Alexander+ (30) | 1.832 | 1917 | 388.0 | R |
| 191. | Otto Hess (27) | 1.834 | 1906 | 333.2 | L |
| Addie Joss+ (27) | 1.834 | 1907 | 338.2 | R | |
| Tom Williams (23) | 1.834 | 1920 | 157.0 | R | |
| 194. | Andy Coakley (22) | 1.835 | 1905 | 255.0 | R |
| 195. | Fred Toney (30) | 1.840 | 1919 | 181.0 | R |
| 196. | Jim McCormick (26) | 1.842 | 1883 | 342.0 | R |
| 197. | Jim McCormick (23) | 1.847 | 1880 | 657.2 | R |
| 198. | John Clarkson+ (23) | 1.849 | 1885 | 623.0 | R |
| 199. | Eppa Rixey+ (25) | 1.850 | 1916 | 287.0 | L |
| 200. | Lady Baldwin (26) | 1.857 | 1885 | 179.1 | L |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 201. | Mordecai Brown+ (33) | 1.859 | 1910 | 295.1 | R |
| 202. | Felix Evans (28) | 1.862 | 1939 | 29.0 | R |
| Rufus Lewis (28) | 1.862 | 1948 | 77.1 | R | |
| 204. | Mordecai Brown+ (27) | 1.865 | 1904 | 212.1 | R |
| 205. | Wilbur Cooper (24) | 1.866 | 1916 | 246.0 | L |
| Lefty Leifield (22) | 1.866 | 1906 | 255.2 | L | |
| 207. | Phil Niekro+ (28) | 1.870 | 1967 | 207.0 | R |
| Irvin Wilhelm (31) | 1.870 | 1908 | 332.0 | R | |
| 209. | Booker McDaniel (30) | 1.873 | 1944 | 57.2 | R |
| 210. | Roger Clemens (42) | 1.874 | 2005 | 211.1 | R |
| 211. | Ed Walsh+ (25) | 1.875 | 1906 | 278.1 | R |
| 212. | Tony Mullane (23) | 1.877 | 1882 | 460.1 | R |
| 213. | Clark Griffith+ (28) | 1.879 | 1898 | 325.2 | R |
| 214. | Joe Horlen (26) | 1.880 | 1964 | 210.2 | R |
| 215. | Sandy Koufax+ (27) | 1.881 | 1963 | 311.0 | L |
| Joe Lake (28) | 1.881 | 1909 | 215.1 | R | |
| 217. | Nick Altrock (28) | 1.882 | 1905 | 315.2 | L |
| 218. | Ray Brown+ (30) | 1.884 | 1938 | 129.0 | R |
| Pol Perritt (25) | 1.884 | 1917 | 215.0 | R | |
| 220. | Harry Howell (31) | 1.887 | 1908 | 324.1 | R |
| 221. | Rube Waddell+ (31) | 1.890 | 1908 | 285.2 | L |
| 222. | Kevin Brown (31) | 1.893 | 1996 | 233.0 | R |
| Blake Snell (25) | 1.893 | 2018 | 180.2 | L | |
| 224. | Christy Mathewson+ (29) | 1.894 | 1910 | 318.1 | R |
| 225. | James Brown (20) | 1.895 | 1939 | 38.0 | R |
| 226. | Bill James (22) | 1.896 | 1914 | 332.1 | R |
| Ben Sanders (23) | 1.896 | 1888 | 275.1 | R | |
| 228. | Max Lanier (27) | 1.898 | 1943 | 213.1 | L |
| 229. | Walter Johnson+ (23) | 1.899 | 1911 | 322.1 | R |
| Walter Johnson+ (28) | 1.899 | 1916 | 369.2 | R | |
| 231. | Art Fromme (25) | 1.901 | 1909 | 279.1 | R |
| 232. | Pedro Martinez+ (25) | 1.902 | 1997 | 241.1 | R |
| Jim Scott (25) | 1.902 | 1913 | 312.1 | R | |
| 234. | Reb Russell (24) | 1.904 | 1913 | 316.2 | L |
| 235. | Joe Black (24) | 1.906 | 1948 | 113.1 | R |
| Jake Weimer (30) | 1.906 | 1904 | 307.0 | L | |
| Elbert Williams (24) | 1.906 | 1932 | 113.1 | R | |
| 238. | Grover Alexander+ (33) | 1.907 | 1920 | 363.1 | R |
| 239. | Charley Hall (25) | 1.908 | 1910 | 188.2 | R |
| Willie Mitchell (23) | 1.908 | 1913 | 217.0 | L | |
| 241. | Smoky Joe Wood (22) | 1.910 | 1912 | 344.0 | R |
| 242. | Charlie Buffinton (27) | 1.911 | 1888 | 400.1 | R |
| Luis Tiant (31) | 1.911 | 1972 | 179.0 | R | |
| 244. | Ed Siever (27) | 1.912 | 1902 | 188.1 | L |
| 245. | Wilbur Wood (29) | 1.913 | 1971 | 334.0 | L |
| 246. | Earl Moseley (27) | 1.914 | 1915 | 268.0 | R |
| 247. | Bill Burns (29) | 1.916 | 1909 | 197.1 | L |
| Jack Matchett (34) | 1.916 | 1942 | 51.2 | R | |
| 249. | Gaylord Perry+ (33) | 1.917 | 1972 | 342.2 | R |
| Jeff Pfeffer (28) | 1.917 | 1916 | 328.2 | R | |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| Hilton Smith+ (31) | 1.917 | 1938 | 112.2 | R | |
| 252. | Orval Overall (27) | 1.920 | 1908 | 225.0 | R |
| 253. | Larry Cheney (30) | 1.921 | 1916 | 253.0 | R |
| 254. | Red Faber+ (28) | 1.923 | 1917 | 248.0 | R |
| 255. | Mickey Welch+ (28) | 1.926 | 1888 | 425.1 | R |
| 256. | Cy Young+ (25) | 1.927 | 1892 | 453.0 | R |
| 257. | Dolf Luque (32) | 1.929 | 1923 | 322.0 | R |
| 258. | Roger Clemens (27) | 1.931 | 1990 | 228.1 | R |
| John Tudor (31) | 1.931 | 1985 | 275.0 | L | |
| 260. | Chet Brewer (22) | 1.933 | 1929 | 149.0 | R |
| 261. | Harry Howell (30) | 1.935 | 1907 | 316.1 | R |
| 262. | Hal Newhouser+ (25) | 1.937 | 1946 | 292.2 | L |
| 263. | Allen Sothoron (25) | 1.938 | 1918 | 209.0 | R |
| 264. | Eddie Cicotte (25) | 1.940 | 1909 | 162.1 | R |
| 265. | Frank Owen (24) | 1.943 | 1904 | 315.0 | R |
| 266. | Ray Caldwell (26) | 1.944 | 1914 | 213.0 | R |
| 267. | Dave McNally (25) | 1.945 | 1968 | 273.0 | L |
| Satchel Paige+ (26) | 1.945 | 1933 | 78.2 | R | |
| 269. | Dan Bankhead (21) | 1.947 | 1941 | 69.1 | R |
| Larry Corcoran (20) | 1.947 | 1880 | 536.1 | R | |
| 271. | Larry Corcoran (22) | 1.948 | 1882 | 355.2 | R |
| Jesse Tannehill (27) | 1.948 | 1902 | 231.0 | L | |
| 273. | Reb Russell (28) | 1.949 | 1917 | 189.1 | L |
| 274. | Sam Weaver (22) | 1.950 | 1878 | 383.0 | R |
| 275. | Billy Rhines (21) | 1.951 | 1890 | 401.1 | R |
| 276. | Ferdie Schupp (26) | 1.952 | 1917 | 272.0 | L |
| 277. | Fred Olmstead (28) | 1.953 | 1910 | 184.1 | R |
| 278. | Pretzels Getzien (20) | 1.955 | 1884 | 147.1 | R |
| Denny McLain (24) | 1.955 | 1968 | 336.0 | R | |
| 280. | Tommy Bond (23) | 1.961 | 1879 | 555.1 | R |
| 281. | Jeff Tesreau (24) | 1.963 | 1912 | 243.0 | R |
| 282. | Cy Young+ (37) | 1.966 | 1904 | 380.0 | R |
| 283. | Carl Lundgren (22) | 1.969 | 1902 | 160.0 | R |
| Billy Pierce (28) | 1.969 | 1955 | 205.2 | L | |
| 285. | Harry Coveleski (30) | 1.970 | 1916 | 324.1 | L |
| 286. | Rufus Lewis (26) | 1.971 | 1946 | 91.1 | R |
| Jeff Pfeffer (26) | 1.971 | 1914 | 315.0 | R | |
| 288. | Perry Werden (22) | 1.974 | 1884 | 141.1 | R |
| 289. | Steve Carlton+ (27) | 1.975 | 1972 | 346.1 | L |
| 290. | Yellow Horse Morris (27) | 1.976 | 1929 | 109.1 | R |
| 291. | Scott Perry (27) | 1.977 | 1918 | 332.1 | R |
| 292. | Harry Howell (28) | 1.978 | 1905 | 323.0 | R |
| 293. | Charlie Ferguson (23) | 1.979 | 1886 | 395.2 | R |
| Tommy John (25) | 1.979 | 1968 | 177.1 | L | |
| Gary Peters (29) | 1.979 | 1966 | 204.2 | L | |
| 296. | Babe Adams (37) | 1.982 | 1919 | 263.1 | R |
| 297. | George Walker (24) | 1.985 | 1939 | 90.2 | R |
| Will White (24) | 1.985 | 1879 | 680.0 | R | |
| 299. | Bobby Bolin (29) | 1.987 | 1968 | 176.2 | R |
| 300. | Dallas Keuchel (32) | 1.989 | 2020 | 63.1 | L |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 301. | Cy Young+ (40) | 1.992 | 1907 | 343.1 | R |
| 302. | Jim Bagby (27) | 1.993 | 1917 | 320.2 | R |
| Christy Mathewson+ (30) | 1.993 | 1911 | 307.0 | R | |
| 304. | Pud Galvin+ (27) | 1.994 | 1884 | 636.1 | R |
| José Leblanc (26) | 1.994 | 1920 | 167.0 | R | |
| Gary Nolan (24) | 1.994 | 1972 | 176.0 | R | |
| Jack Taylor (32) | 1.994 | 1906 | 302.1 | R | |
| 308. | Jay Heard (26) | 2.000 | 1946 | 18.0 | L |
| Christy Mathewson+ (26) | 2.000 | 1907 | 315.0 | R | |
| Jack Pfiester (30) | 2.000 | 1908 | 252.0 | L | |
| Willie Powell (24) | 2.000 | 1928 | 135.0 | R | |
| Ford Smith (28) | 2.000 | 1947 | 63.0 | R | |
| 313. | Dave Brown (27) | 2.004 | 1924 | 179.2 | L |
| Tully Sparks (32) | 2.004 | 1907 | 265.0 | R | |
| 315. | Lefty Tyler (28) | 2.005 | 1918 | 269.1 | L |
| Lon Warneke (24) | 2.005 | 1933 | 287.1 | R | |
| Hooks Wiltse (29) | 2.005 | 1909 | 269.1 | L | |
| 318. | Harry Gaspar (26) | 2.008 | 1909 | 260.0 | R |
| Charlie Hodnett (24) | 2.008 | 1884 | 121.0 | ||
| 320. | Hippo Vaughn (29) | 2.009 | 1917 | 295.2 | L |
| 321. | Whitey Ford+ (29) | 2.011 | 1958 | 219.1 | L |
| Telosh Howard (34) | 2.011 | 1938 | 62.2 | R | |
| 323. | Yu Darvish (33) | 2.013 | 2020 | 76.0 | R |
| Eddie Plank+ (34) | 2.013 | 1910 | 250.1 | L | |
| Babe Ruth+ (22) | 2.013 | 1917 | 326.1 | L | |
| Ed Seward (21) | 2.013 | 1888 | 518.2 | R | |
| Doc Watson (29) | 2.013 | 1914 | 228.0 | L | |
| 328. | Addie Joss+ (25) | 2.014 | 1905 | 286.0 | R |
| 329. | Red Faber+ (27) | 2.016 | 1916 | 205.1 | R |
| Kid Nichols+ (34) | 2.016 | 1904 | 317.0 | R | |
| 331. | Al Benton (34) | 2.019 | 1945 | 191.2 | R |
| 332. | Lefty Tyler (26) | 2.021 | 1916 | 249.1 | L |
| 333. | Bob Wicker (28) | 2.022 | 1905 | 178.0 | R |
| 334. | Smoky Joe Wood (21) | 2.024 | 1911 | 275.2 | R |
| 335. | Bugs Raymond (26) | 2.026 | 1908 | 324.1 | R |
| Ed Reulbach (25) | 2.026 | 1908 | 297.2 | R | |
| Frank Smith (28) | 2.026 | 1908 | 297.2 | R | |
| 338. | Phil Douglas (29) | 2.028 | 1919 | 213.0 | R |
| Orel Hershiser (26) | 2.028 | 1985 | 239.2 | R | |
| 340. | Adonis Terry (23) | 2.031 | 1888 | 195.0 | R |
| 341. | Bill Foster+ (23) | 2.032 | 1927 | 217.0 | L |
| Christy Mathewson+ (23) | 2.032 | 1904 | 367.2 | R | |
| 343. | Percy Bailey (28) | 2.033 | 1933 | 79.2 | R |
| 344. | Ed Karger (24) | 2.035 | 1907 | 314.0 | L |
| Smoky Owens (27) | 2.035 | 1939 | 66.1 | R | |
| Jim Scott (27) | 2.035 | 1915 | 296.1 | R | |
| 347. | Eddie Cicotte (30) | 2.038 | 1914 | 269.1 | R |
| Sandy Koufax+ (29) | 2.038 | 1965 | 335.2 | L | |
| Al Mamaux (21) | 2.038 | 1915 | 251.2 | R | |
| 350. | Catfish Hunter+ (26) | 2.042 | 1972 | 295.1 | R |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 351. | Roger Clemens (34) | 2.045 | 1997 | 264.0 | R |
| Jesse Tannehill (29) | 2.045 | 1904 | 281.2 | L | |
| 353. | Buttons Briggs (28) | 2.047 | 1904 | 277.0 | R |
| 354. | Nick Cullop (28) | 2.048 | 1916 | 167.0 | L |
| 355. | Old Hoss Radbourn+ (28) | 2.050 | 1883 | 632.1 | R |
| 356. | Deacon Phillippe (30) | 2.051 | 1902 | 272.0 | R |
| Dave Righetti (22) | 2.051 | 1981 | 105.1 | L | |
| 358. | Charles Bender+ (23) | 2.052 | 1907 | 219.1 | R |
| Rube Waddell+ (25) | 2.052 | 1902 | 276.1 | L | |
| 360. | Hippo Vaughn (26) | 2.053 | 1914 | 293.2 | L |
| 361. | Stan Bahnsen (23) | 2.054 | 1968 | 267.1 | R |
| Bob Veale (32) | 2.054 | 1968 | 245.1 | L | |
| 363. | Glenn Liebhardt (24) | 2.055 | 1907 | 280.1 | R |
| 364. | Noodles Hahn (25) | 2.056 | 1904 | 297.2 | L |
| Slim Sallee (34) | 2.056 | 1919 | 227.2 | L | |
| 366. | Sam Leever (31) | 2.057 | 1903 | 284.1 | R |
| 367. | Lefty Grove+ (31) | 2.058 | 1931 | 288.2 | L |
| Joe Horlen (29) | 2.058 | 1967 | 258.0 | R | |
| 369. | Christy Mathewson+ (32) | 2.059 | 1913 | 306.0 | R |
| Nap Rucker (22) | 2.059 | 1907 | 275.1 | L | |
| 371. | Tommy Bond (22) | 2.061 | 1878 | 532.2 | R |
| 372. | Nelson Dean (32) | 2.062 | 1931 | 91.2 | R |
| 373. | Allie Reynolds (35) | 2.063 | 1952 | 244.1 | R |
| 374. | Nick Altrock (29) | 2.065 | 1906 | 287.2 | L |
| 375. | Joe Strong (29) | 2.066 | 1932 | 61.0 | R |
| 376. | Pedro Martinez+ (27) | 2.067 | 1999 | 213.1 | R |
| Jim Palmer+ (26) | 2.067 | 1972 | 274.1 | R | |
| 378. | Carl Weilman (29) | 2.068 | 1919 | 148.0 | L |
| Vic Willis+ (32) | 2.068 | 1908 | 304.2 | R | |
| 380. | Ray Brown+ (32) | 2.069 | 1940 | 165.1 | R |
| George Winter (29) | 2.069 | 1907 | 256.2 | R | |
| 382. | Bob Caruthers (21) | 2.071 | 1885 | 482.1 | R |
| 383. | Bill Sowders (23) | 2.073 | 1888 | 317.0 | R |
| 384. | Vet Barnes (25) | 2.077 | 1937 | 69.1 | R |
| Bill Donovan (31) | 2.077 | 1908 | 242.2 | R | |
| Roger Nelson (28) | 2.077 | 1972 | 173.1 | R | |
| Pat Ragan (32) | 2.077 | 1916 | 182.0 | R | |
| Bill Swift (30) | 2.077 | 1992 | 164.2 | R | |
| Carl Weilman (24) | 2.077 | 1914 | 299.0 | L | |
| 390. | Nap Rucker (23) | 2.079 | 1908 | 333.1 | L |
| Tom Seaver+ (28) | 2.079 | 1973 | 290.0 | R | |
| Don Sutton+ (27) | 2.079 | 1972 | 272.2 | R | |
| 393. | Eddie Plank+ (39) | 2.080 | 1915 | 268.1 | L |
| Frank Smith (24) | 2.080 | 1904 | 203.1 | R | |
| 395. | Cy Young+ (36) | 2.081 | 1903 | 341.2 | R |
| 396. | Jerry Koosman (25) | 2.082 | 1968 | 263.2 | L |
| 397. | Mike O'Neill (26) | 2.086 | 1904 | 220.0 | L |
| 398. | Dinelson Lamet (27) | 2.087 | 2020 | 69.0 | R |
| Dazzy Vance+ (37) | 2.087 | 1928 | 280.1 | R | |
| 400. | Bill Foster+ (28) | 2.089 | 1932 | 116.1 | L |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| Jim Whitney (26) | 2.089 | 1884 | 336.0 | R | |
| 402. | Jim Palmer+ (29) | 2.090 | 1975 | 323.0 | R |
| Will White (28) | 2.090 | 1883 | 577.0 | R | |
| 404. | Bill James (30) | 2.091 | 1917 | 198.0 | R |
| 405. | Mordecai Brown+ (38) | 2.094 | 1915 | 236.1 | R |
| 406. | Ted Lyons+ (41) | 2.096 | 1942 | 180.1 | R |
| Ed Poole (27) | 2.096 | 1902 | 146.0 | R | |
| 408. | Spud Chandler (38) | 2.098 | 1946 | 257.1 | R |
| Carl Mays (27) | 2.098 | 1919 | 266.0 | R | |
| Jeff Pfeffer (27) | 2.098 | 1915 | 291.2 | R | |
| Howie Pollet (25) | 2.098 | 1946 | 266.0 | L | |
| 412. | Lefty Leifield (24) | 2.099 | 1908 | 218.2 | L |
| 413. | Bob Romby (29) | 2.100 | 1948 | 90.0 | L |
| Warren Spahn+ (32) | 2.100 | 1953 | 265.2 | L | |
| 415. | Bill Dinneen (32) | 2.102 | 1908 | 167.0 | R |
| Sam Leever (36) | 2.102 | 1908 | 192.2 | R | |
| Juan Marichal+ (31) | 2.102 | 1969 | 299.2 | R | |
| Earl Moore (31) | 2.102 | 1909 | 299.2 | R | |
| Frank Owen (25) | 2.102 | 1905 | 334.0 | R | |
| 420. | Al Maul (32) | 2.103 | 1898 | 239.2 | R |
| Dave Roberts (26) | 2.103 | 1971 | 269.2 | L | |
| 422. | Eddie Plank+ (35) | 2.104 | 1911 | 256.2 | L |
| Slim Sallee (29) | 2.104 | 1914 | 282.1 | L | |
| Pete Schneider (21) | 2.104 | 1917 | 333.2 | R | |
| 425. | Frank Corridon (28) | 2.105 | 1909 | 171.0 | R |
| Old Hoss Radbourn+ (27) | 2.105 | 1882 | 466.0 | R | |
| 427. | Dick Ellsworth (23) | 2.106 | 1963 | 290.2 | L |
| 428. | Tommy Bond (21) | 2.107 | 1877 | 521.0 | R |
| Wilbur Cooper (26) | 2.107 | 1918 | 273.1 | L | |
| Dave Foutz (29) | 2.107 | 1886 | 504.0 | R | |
| 431. | Ray Fisher (27) | 2.108 | 1915 | 247.2 | R |
| 432. | Jack Powell (33) | 2.109 | 1908 | 256.0 | R |
| Jack Powell (34) | 2.109 | 1909 | 239.0 | R | |
| 434. | Bullet Joe Bush (25) | 2.112 | 1918 | 272.2 | R |
| 435. | Harry Howell (29) | 2.114 | 1906 | 276.2 | R |
| 436. | Joe Benz (29) | 2.115 | 1915 | 238.1 | R |
| Rube Foster (27) | 2.115 | 1915 | 255.1 | R | |
| Satchel Paige+ (35) | 2.115 | 1942 | 72.1 | R | |
| 439. | King Brockett (28) | 2.118 | 1909 | 170.0 | R |
| Willie Cornelius (31) | 2.118 | 1938 | 102.0 | R | |
| Gentry Jessup (31) | 2.118 | 1946 | 51.0 | R | |
| Johnny Lush (22) | 2.118 | 1908 | 250.2 | L | |
| Christy Mathewson+ (21) | 2.118 | 1902 | 284.2 | R | |
| 444. | Bill Bernhard (32) | 2.119 | 1903 | 165.2 | R |
| Tom Hughes (31) | 2.119 | 1915 | 280.1 | R | |
| Christy Mathewson+ (31) | 2.119 | 1912 | 310.0 | R | |
| 447. | Dizzy Trout (29) | 2.120 | 1944 | 352.1 | R |
| 448. | Heinie Berger (26) | 2.122 | 1908 | 199.1 | R |
| 449. | Steve Blass (26) | 2.124 | 1968 | 220.1 | R |
| Roger Wolff (34) | 2.124 | 1945 | 250.0 | R | |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| 451. | Dutch Leonard (36) | 2.125 | 1945 | 216.0 | R |
| 452. | Wilbur Cooper (22) | 2.126 | 1914 | 266.2 | L |
| Phil Douglas (28) | 2.126 | 1918 | 156.2 | R | |
| 454. | John Ward+ (21) | 2.127 | 1881 | 330.0 | R |
| 455. | Clayton Kershaw (27) | 2.128 | 2015 | 232.2 | L |
| 456. | Frank Smith (25) | 2.129 | 1905 | 291.2 | R |
| 457. | Doc White (24) | 2.130 | 1903 | 300.0 | L |
| 458. | Johnny Beazley (24) | 2.132 | 1942 | 215.1 | R |
| Kyle Hendricks (26) | 2.132 | 2016 | 190.0 | R | |
| Mickey Hughes (21) | 2.132 | 1888 | 363.0 | R | |
| 461. | Bill Bernhard (33) | 2.133 | 1904 | 320.2 | R |
| Burleigh Grimes+ (24) | 2.133 | 1918 | 270.0 | R | |
| Juan Marichal+ (27) | 2.133 | 1965 | 295.1 | R | |
| 464. | Whitey Ford+ (35) | 2.134 | 1964 | 244.2 | L |
| Kid Nichols+ (28) | 2.134 | 1898 | 388.0 | R | |
| 466. | John Clarkson+ (22) | 2.136 | 1884 | 118.0 | R |
| Félix Hernández (28) | 2.136 | 2014 | 236.0 | R | |
| 468. | Terry Larkin (21) | 2.138 | 1877 | 501.0 | R |
| Bobby Mitchell (22) | 2.138 | 1878 | 80.0 | L | |
| Guy Morton (22) | 2.138 | 1915 | 240.0 | R | |
| 471. | Will White (25) | 2.140 | 1880 | 517.1 | R |
| 472. | Joe Boehling (22) | 2.142 | 1913 | 235.1 | L |
| 473. | Buttons Briggs (29) | 2.143 | 1905 | 168.0 | R |
| 474. | Jack Manning (22) | 2.144 | 1876 | 197.1 | R |
| George McQuillan (24) | 2.144 | 1909 | 247.2 | R | |
| 476. | Don Drysdale+ (31) | 2.146 | 1968 | 239.0 | R |
| 477. | Charlie Buffinton (23) | 2.147 | 1884 | 587.0 | R |
| John Ward+ (19) | 2.147 | 1879 | 587.0 | R | |
| 479. | Lee Richmond (23) | 2.148 | 1880 | 590.2 | L |
| 480. | Bill Bernhard (31) | 2.150 | 1902 | 226.0 | R |
| Howie Camnitz (25) | 2.150 | 1907 | 180.0 | R | |
| Rube Waddell+ (30) | 2.150 | 1907 | 284.2 | L | |
| 483. | Babe Adams (31) | 2.152 | 1913 | 313.2 | R |
| Carl Weilman (26) | 2.152 | 1916 | 276.0 | L | |
| 485. | Vern Law (35) | 2.153 | 1965 | 217.1 | R |
| Ed Walsh+ (31) | 2.153 | 1912 | 393.0 | R | |
| Cy Young+ (35) | 2.153 | 1902 | 384.2 | R | |
| 488. | Babe Adams (38) | 2.156 | 1920 | 263.0 | R |
| 489. | Hal Schumacher (22) | 2.157 | 1933 | 258.2 | R |
| 490. | Zack Greinke (25) | 2.158 | 2009 | 229.1 | R |
| 491. | Red Ames (24) | 2.160 | 1907 | 233.1 | R |
| Bill Foster+ (20) | 2.160 | 1924 | 66.2 | L | |
| Barney Morris (34) | 2.160 | 1944 | 58.1 | R | |
| Art Nehf (24) | 2.160 | 1917 | 233.1 | L | |
| Tully Sparks (31) | 2.160 | 1906 | 316.2 | R | |
| Julio Urías (25) | 2.160 | 2022 | 175.0 | L | |
| Dazzy Vance+ (33) | 2.160 | 1924 | 308.1 | R | |
| 498. | Bret Saberhagen (25) | 2.161 | 1989 | 262.1 | R |
| 499. | Charles Bender+ (27) | 2.163 | 1911 | 216.1 | R |
| Dick Rudolph (28) | 2.163 | 1916 | 312.0 | R | |
| Rank | Player (age that year) | Earned Run Average | Year | IP | Throws |
| Ed Siever (32) | 2.163 | 1907 | 274.2 | L | |
| Bob Tewksbury (31) | 2.163 | 1992 | 233.0 | R |
