| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.45 | 190306030_BOS_NYA |
| Doc White | CHA | 3.64 | 190306020_CLE_CHA |
| Christy Mathewson | SFN | 2.9 | 190306040_SFN_CHN |
| Jack Taylor | CHN | 2.35 | 190306020_LAN_CHN |
| Vic Willis | ATL | 2.08 | 190306030_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike O'Neill | SLN | -4.47 | 190306040_LAN_SLN |
| Roy Evans | LAN | -2.72 | 190306020_LAN_CHN |
| Jack Harper | CIN | -1.12 | 190306030_ATL_CIN |
| Kaiser Wilhelm | PIT | -0.88 | 190306040_ATL_PIT |
| Wiley Piatt | ATL | -0.6 | 190306040_ATL_PIT |
Based on accumulated WAA for this season up to 1903-06-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.62 | Cy Young | 105.7 | BOS |
| +002+ | 4.55 | Rube Waddell | 112 | OAK |
| +003+ | 4.14 | Eddie Plank | 90 | OAK |
| +004+ | 4.08 | Addie Joss | 87 | CLE |
| +005+ | 3.94 | Doc White | 77 | CHA |
| +006+ | 3.63 | Roy Patterson | 69 | CHA |
| +007+ | 3.6 | Jack Chesbro | 104.7 | NYA |
| +008+ | 3.46 | Bill Dinneen | 84.7 | BOS |
| +009+ | 3.39 | Earl Moore | 71 | CLE |
| +010+ | 3.17 | Willie Sudhoff | 72 | BAL |
| +011+ | 2.98 | George Mullin | 93 | DET |
| +012+ | 2.95 | Bill Donovan | 70.7 | DET |
| +013+ | 2.82 | Ed Siever | 66 | BAL |
| +014+ | 2.77 | Sam Leever | 81 | PIT |
| +015+ | 2.57 | Jack Sutthoff | 75 | CIN |
| +018+ | 2.23 | Christy Mathewson | 110 | SFN |
| +019+ | 2.14 | Jack Taylor | 107.3 | CHN |
| +020+ | 2.12 | Joe McGinnity | 115.7 | SFN |
| +026+ | 1.92 | Bill Bernhard | 71 | CLE |
| +030+ | 1.72 | Red Donahue | 79 | BAL |
| +033+ | 1.52 | Chief Bender | 82.3 | OAK |
| +036+ | 1.45 | Vic Willis | 97.7 | ATL |
| +039+ | 1.4 | Jesse Tannehill | 71 | NYA |
| +044+ | 1.32 | Bob Wicker | 80.7 | TOT |
| +045+ | 1.26 | Bill Reidy | 18 | BAL |
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