| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.6 | 190306190_OAK_CHA |
| Sam Leever | PIT | 3.23 | 190306190_PIT_ATL |
| Doc White | CHA | 3.22 | 190306200_OAK_CHA |
| Christy Mathewson | SFN | 3.02 | 190306180_CHN_SFN |
| Bill Dinneen | BOS | 2.91 | 190306190_BOS_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wiley Piatt | ATL | -2.84 | 190306200_PIT_ATL |
| Jack McFetridge | PHI | -1.38 | 190306180_CIN_PHI |
| Gene Wright | CLE | -0.9 | 190306190_BOS_CLE |
| Norwood Gibson | BOS | -0.47 | 190306200_BOS_CLE |
| Al Orth | MIN | -0.27 | 190306200_MIN_BAL |
Based on accumulated WAA for this season up to 1903-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.11 | Rube Waddell | 161.3 | OAK |
| +002+ | 5.65 | Addie Joss | 117.3 | CLE |
| +003+ | 5.28 | Cy Young | 129.7 | BOS |
| +004+ | 5.2 | Eddie Plank | 108 | OAK |
| +005+ | 4.9 | George Mullin | 119 | DET |
| +006+ | 4.82 | Earl Moore | 99 | CLE |
| +007+ | 4.63 | Sam Leever | 108 | PIT |
| +008+ | 4.53 | Jack Chesbro | 122.7 | NYA |
| +009+ | 4.41 | Doc White | 106 | CHA |
| +010+ | 4.39 | Bill Donovan | 95.7 | DET |
| +011+ | 3.96 | Bill Dinneen | 117.7 | BOS |
| +012+ | 3.71 | Chief Bender | 119.3 | OAK |
| +013+ | 3.65 | Joe McGinnity | 155.7 | SFN |
| +014+ | 3.42 | Christy Mathewson | 134 | SFN |
| +015+ | 3.33 | Willie Sudhoff | 86 | BAL |
| +020+ | 2.98 | Roy Patterson | 90.3 | CHA |
| +022+ | 2.86 | Jack Sutthoff | 102 | CIN |
| +024+ | 2.5 | Tom Hughes | 74.7 | BOS |
| +027+ | 2.29 | Ed Siever | 68 | BAL |
| +032+ | 2.05 | Red Donahue | 104 | BAL |
| +033+ | 1.92 | Jack Taylor | 142.3 | CHN |
| +036+ | 1.79 | Bill Bernhard | 98 | CLE |
| +038+ | 1.73 | John Deering | 40.7 | DET |
| +039+ | 1.71 | Barney Wolfe | 43 | NYA |
| +042+ | 1.64 | Jack Powell | 95 | BAL |
_