| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.12 | 190306160_BAL_OAK |
| Bill Donovan | DET | 3.87 | 190306160_DET_MIN |
| Bill Dinneen | BOS | 3.23 | 190306160_CLE_BOS |
| Doc White | CHA | 2.76 | 190306160_CHA_NYA |
| Sam Leever | PIT | 2.65 | 190306150_CHN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Chick Fraser | PHI | -1.74 | 190306160_SFN_PHI |
| Wiley Piatt | ATL | -1.17 | 190306172_LAN_ATL |
| Bob Rhoads | SLN | -1.09 | 190306150_SLN_CIN |
| Ned Garvin | LAN | -0.65 | 190306171_LAN_ATL |
| Norwood Gibson | BOS | -0.61 | 190306171_CLE_BOS |
Based on accumulated WAA for this season up to 1903-06-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.79 | Rube Waddell | 153 | OAK |
| +002+ | 5.71 | Addie Joss | 117.3 | CLE |
| +003+ | 5.35 | Cy Young | 129.7 | BOS |
| +004+ | 5.21 | Eddie Plank | 108 | OAK |
| +005+ | 4.54 | Jack Chesbro | 122.7 | NYA |
| +006+ | 4.41 | Bill Donovan | 95.7 | DET |
| +007+ | 4.37 | Earl Moore | 89 | CLE |
| +008+ | 4.25 | Sam Leever | 99 | PIT |
| +009+ | 4.09 | George Mullin | 110 | DET |
| +010+ | 4.03 | Doc White | 97 | CHA |
| +011+ | 3.67 | Joe McGinnity | 155.7 | SFN |
| +012+ | 3.6 | Bill Dinneen | 108.7 | BOS |
| +013+ | 3.35 | Willie Sudhoff | 86 | BAL |
| +015+ | 3.11 | Chief Bender | 110.3 | OAK |
| +018+ | 2.85 | Christy Mathewson | 125 | SFN |
| +019+ | 2.7 | Jack Sutthoff | 93 | CIN |
| +021+ | 2.54 | Tom Hughes | 74.7 | BOS |
| +022+ | 2.31 | Ed Siever | 68 | BAL |
| +024+ | 2.3 | Red Donahue | 95 | BAL |
| +026+ | 2.18 | Roy Patterson | 81.3 | CHA |
| +034+ | 1.95 | Jack Taylor | 142.3 | CHN |
| +035+ | 1.85 | Bill Bernhard | 89 | CLE |
| +038+ | 1.74 | John Deering | 40.7 | DET |
| +039+ | 1.71 | Barney Wolfe | 43 | NYA |
| +043+ | 1.42 | Frank Kitson | 77.3 | DET |
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