| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 8.38 | 190809210_PIT_SFN |
| George McQuillan | PHI | 6.93 | 190809212_CHN_PHI |
| Mordecai Brown | CHN | 4.72 | 190809191_CHN_PHI |
| Ed Walsh | CHA | 4.67 | 190809210_OAK_CHA |
| Vic Willis | PIT | 1.12 | 190809210_PIT_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Lake | NYA | -7.25 | 190809210_NYA_CLE |
| George Mullin | DET | -4.31 | 190809190_NYA_DET |
| Burt Keeley | MIN | -2.25 | 190809210_MIN_BAL |
| Fred Burchell | BOS | -1.09 | 190809210_BOS_DET |
| Bob Spade | CIN | -0.72 | 190809190_CIN_ATL |
Based on accumulated WAA for this season up to 1908-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 11.81 | Christy Mathewson | 339 | SFN |
| +002+ | 10.62 | George McQuillan | 341.7 | PHI |
| +003+ | 9.52 | Ed Walsh | 405 | CHA |
| +006+ | 8.84 | Mordecai Brown | 260 | CHN |
| +007+ | 8.81 | Cy Young | 279 | BOS |
| +009+ | 7.58 | Addie Joss | 295.3 | CLE |
| +011+ | 6.24 | Hooks Wiltse | 297.3 | SFN |
| +012+ | 5.34 | Jack Powell | 241 | BAL |
| +013+ | 5.22 | Vic Willis | 276.7 | PIT |
| +018+ | 3.61 | Walter Johnson | 211.7 | MIN |
| +021+ | 3.58 | Kaiser Wilhelm | 294.3 | LAN |
| +022+ | 3.54 | Harry Howell | 290.7 | BAL |
| +023+ | 3.5 | Eddie Plank | 217.7 | OAK |
| +024+ | 3.35 | Ed Reulbach | 265 | CHN |
| +025+ | 3.33 | Andy Coakley | 260.7 | TOT |
| +028+ | 3.28 | Nap Rucker | 298.3 | LAN |
| +035+ | 2.97 | Bob Rhoads | 244 | CLE |
| +036+ | 2.95 | Heinie Berger | 189.7 | CLE |
| +044+ | 2.7 | Frank Corridon | 180.3 | PHI |
| +047+ | 2.61 | Doc White | 279.7 | CHA |
| +053+ | 2.3 | Rube Waddell | 266.7 | BAL |
| +054+ | 2.14 | Bob Ewing | 247.7 | CIN |
| +055+ | 2.11 | Charlie Chech | 146.3 | CLE |
| +059+ | 2.01 | Bugs Raymond | 292.3 | SLN |
| +060+ | 1.98 | Sam Leever | 186.7 | PIT |
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