| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mordecai Brown | CHN | 5.12 | 190808190_ATL_CHN |
| Ed Walsh | CHA | 4.99 | 190808190_CHA_OAK |
| Christy Mathewson | SFN | 3.92 | 190808170_SFN_SLN |
| Addie Joss | CLE | 2.25 | 190808170_CLE_NYA |
| Jack Powell | BAL | 1.76 | 190808192_BAL_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Lake | NYA | -8.61 | 190808170_CLE_NYA |
| George Mullin | DET | -2.38 | 190808190_DET_NYA |
| Carl Lundgren | CHN | -1.22 | 190808180_PHI_CHN |
| Charlie Smith | MIN | -1.02 | 190808191_BAL_MIN |
| Bob Spade | CIN | -0.57 | 190808190_SFN_CIN |
Based on accumulated WAA for this season up to 1908-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 9.88 | George McQuillan | 268.3 | PHI |
| +003+ | 7.52 | Christy Mathewson | 254.7 | SFN |
| +004+ | 7.51 | Mordecai Brown | 196.7 | CHN |
| +005+ | 7.34 | Cy Young | 219 | BOS |
| +007+ | 6.42 | Ed Walsh | 304.7 | CHA |
| +008+ | 6.16 | Addie Joss | 231.3 | CLE |
| +010+ | 5.44 | Hooks Wiltse | 236.3 | SFN |
| +011+ | 4.91 | Jack Powell | 173 | BAL |
| +012+ | 4.49 | Kaiser Wilhelm | 235.3 | LAN |
| +014+ | 4.08 | Andy Coakley | 219.7 | CIN |
| +015+ | 4.03 | Harry Howell | 234.3 | BAL |
| +016+ | 3.97 | Ed Willett | 157.3 | DET |
| +017+ | 3.82 | Bob Ewing | 195.7 | CIN |
| +020+ | 3.18 | Vic Willis | 204.7 | PIT |
| +021+ | 3.12 | Bill Foxen | 108 | PHI |
| +023+ | 3.05 | Bob Rhoads | 197 | CLE |
| +027+ | 2.78 | Rube Vickers | 260 | OAK |
| +032+ | 2.55 | Eddie Plank | 173.3 | OAK |
| +033+ | 2.45 | Bill Donovan | 138.7 | DET |
| +034+ | 2.38 | Nap Rucker | 217.3 | LAN |
| +039+ | 2.24 | Cecil Ferguson | 120.7 | ATL |
| +042+ | 2.1 | Lefty Leifield | 135.3 | PIT |
| +044+ | 1.98 | Sam Leever | 149.7 | PIT |
| +046+ | 1.91 | Tom Hughes | 202.7 | MIN |
| +050+ | 1.81 | Howie Camnitz | 184.7 | PIT |
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