| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.31 | 190306300_OAK_CLE |
| Cy Young | BOS | 6.58 | 190307010_BOS_CHA |
| Doc White | CHA | 3.87 | 190306300_BOS_CHA |
| Sam Leever | PIT | 2.36 | 190306300_PIT_LAN |
| Christy Mathewson | SFN | 1.9 | 190306300_SLN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Fred Mitchell | PHI | -4.63 | 190307010_CHN_PHI |
| Togie Pittinger | ATL | -1.3 | 190306290_CHN_ATL |
| Al Orth | MIN | -0.67 | 190307010_MIN_DET |
| Clarence Currie | SLN | -0.61 | 190307010_SLN_SFN |
| Jock Menefee | CHN | -0.48 | 190307010_CHN_PHI |
Based on accumulated WAA for this season up to 1903-07-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.58 | Cy Young | 157.7 | BOS |
| +002+ | 7.49 | Rube Waddell | 186 | OAK |
| +003+ | 5.93 | Bill Donovan | 119.7 | DET |
| +004+ | 5.86 | George Mullin | 135 | DET |
| +005+ | 5.68 | Addie Joss | 146.3 | CLE |
| +006+ | 5.64 | Doc White | 134.3 | CHA |
| +007+ | 5.63 | Eddie Plank | 135 | OAK |
| +008+ | 5.38 | Earl Moore | 117 | CLE |
| +009+ | 4.87 | Bill Dinneen | 134.7 | BOS |
| +010+ | 4.75 | Jack Chesbro | 149.3 | NYA |
| +012+ | 3.91 | Willie Sudhoff | 113 | BAL |
| +013+ | 3.68 | Roy Patterson | 109 | CHA |
| +014+ | 3.59 | Joe McGinnity | 194.7 | SFN |
| +015+ | 3.57 | Bill Bernhard | 125 | CLE |
| +016+ | 3.41 | Chief Bender | 131.3 | OAK |
| +020+ | 3.16 | Tom Hughes | 92.7 | BOS |
| +021+ | 2.97 | Sam Leever | 122 | PIT |
| +022+ | 2.83 | Red Donahue | 122 | BAL |
| +029+ | 2.46 | Ed Siever | 76 | BAL |
| +032+ | 2.25 | Jesse Tannehill | 123.3 | NYA |
| +033+ | 2.15 | Christy Mathewson | 161 | SFN |
| +035+ | 2.08 | Frank Kitson | 98.3 | DET |
| +037+ | 2.05 | Jake Weimer | 124.3 | CHN |
| +041+ | 1.95 | Barney Wolfe | 60.3 | NYA |
| +047+ | 1.68 | John Deering | 52.7 | DET |
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