| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 4.59 | 190308291_BOS_MIN |
| Eddie Plank | OAK | 2.31 | 190308270_BOS_OAK |
| Jack Chesbro | NYA | 0.73 | 190308270_MIN_NYA |
| Sam Leever | PIT | 0.62 | 190308291_SLN_PIT |
| Christy Mathewson | SFN | 0.56 | 190308280_SFN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.19 | 190308270_PHI_LAN |
| Togie Pittinger | ATL | -3.65 | 190308272_SFN_ATL |
| Henry Schmidt | LAN | -3.15 | 190308270_PHI_LAN |
| Bob Rhoads | SLN | -2.11 | 190308292_SLN_PIT |
| Dummy Taylor | SFN | -1.22 | 190308271_SFN_ATL |
Based on accumulated WAA for this season up to 1903-08-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.57 | Earl Moore | 239.7 | CLE |
| +002+ | 12.24 | Cy Young | 285.7 | BOS |
| +003+ | 11 | Bill Donovan | 245 | DET |
| +004+ | 10.87 | Addie Joss | 274.7 | CLE |
| +005+ | 10.75 | Willie Sudhoff | 230.7 | BAL |
| +006+ | 10.63 | Rube Waddell | 324 | OAK |
| +007+ | 9.66 | Doc White | 248.7 | CHA |
| +008+ | 9.36 | George Mullin | 254.7 | DET |
| +009+ | 8.71 | Bill Dinneen | 238.7 | BOS |
| +010+ | 8.48 | Eddie Plank | 262.7 | OAK |
| +012+ | 6.88 | Frank Kitson | 201.7 | DET |
| +017+ | 5.9 | Jack Chesbro | 266.3 | NYA |
| +018+ | 5.59 | Tom Hughes | 186.7 | BOS |
| +019+ | 5.42 | Roy Patterson | 226.7 | CHA |
| +020+ | 5.37 | Chief Bender | 223.3 | OAK |
| +022+ | 4.79 | Sam Leever | 240 | PIT |
| +024+ | 4.77 | Red Donahue | 193 | TOT |
| +023+ | 4.77 | Ed Siever | 183 | BAL |
| +026+ | 4.46 | Jack Powell | 242.3 | BAL |
| +027+ | 4.4 | Clark Griffith | 186 | NYA |
| +035+ | 3.73 | Watty Lee | 122.3 | MIN |
| +036+ | 3.56 | Barney Wolfe | 115.3 | NYA |
| +041+ | 3.43 | Christy Mathewson | 310.7 | SFN |
| +046+ | 3.01 | Highball Wilson | 206.3 | MIN |
| +048+ | 2.71 | Jesse Tannehill | 202.3 | NYA |
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