| Starter | Tm | Tier | Game |
|---|---|---|---|
| Christy Mathewson | SFN | 7.78 | 190809120_LAN_SFN |
| George McQuillan | PHI | 7.21 | 190809100_PHI_ATL |
| Mordecai Brown | CHN | 4.91 | 190809100_CHN_SLN |
| Cy Young | BOS | 4.03 | 190809120_NYA_BOS |
| Ed Walsh | CHA | 3.2 | 190809110_CHA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gus Dorner | ATL | -5.22 | 190809122_ATL_PHI |
| George Mullin | DET | -3.27 | 190809110_CHA_DET |
| Rube Manning | NYA | -2.77 | 190809120_NYA_BOS |
| Burt Keeley | MIN | -1.71 | 190809100_BOS_MIN |
| Fred Burchell | BOS | -1.32 | 190809100_BOS_MIN |
Based on accumulated WAA for this season up to 1908-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.85 | Christy Mathewson | 319.3 | SFN |
| +002+ | 10.35 | George McQuillan | 314.7 | PHI |
| +003+ | 8.81 | Mordecai Brown | 243 | CHN |
| +005+ | 8.46 | Cy Young | 271 | BOS |
| +007+ | 7.46 | Ed Walsh | 369 | CHA |
| +009+ | 7.15 | Hooks Wiltse | 280.3 | SFN |
| +010+ | 7.09 | Addie Joss | 277.3 | CLE |
| +012+ | 4.29 | Harry Howell | 279.7 | BAL |
| +014+ | 4.28 | Vic Willis | 250.7 | PIT |
| +016+ | 3.97 | Jack Powell | 214 | BAL |
| +018+ | 3.58 | Frank Corridon | 162.3 | PHI |
| +020+ | 3.37 | Nap Rucker | 274.7 | LAN |
| +026+ | 3.16 | Andy Coakley | 251.7 | TOT |
| +028+ | 3.06 | Eddie Plank | 209.3 | OAK |
| +037+ | 2.76 | Bill Foxen | 141.7 | PHI |
| +040+ | 2.67 | Walter Johnson | 191.3 | MIN |
| +042+ | 2.64 | Bob Ewing | 237 | CIN |
| +043+ | 2.62 | Tom Hughes | 255.7 | MIN |
| +045+ | 2.54 | Bill Donovan | 183.7 | DET |
| +046+ | 2.49 | Howie Camnitz | 211.7 | PIT |
| +047+ | 2.45 | Kaiser Wilhelm | 276.3 | LAN |
| +050+ | 2.32 | Ed Reulbach | 246 | CHN |
| +053+ | 2.26 | Bob Rhoads | 226 | CLE |
| +055+ | 2.22 | Sam Leever | 178.7 | PIT |
| +056+ | 2.2 | Nick Maddox | 210.7 | PIT |
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