| Starter | Tm | Tier | Game |
|---|---|---|---|
| Cy Young | BOS | 6.67 | 190304280_BOS_MIN |
| Rube Waddell | OAK | 5.7 | 190304280_NYA_OAK |
| Bill Donovan | DET | 3.98 | 190304290_CHA_DET |
| Christy Mathewson | SFN | 3.77 | 190304270_ATL_SFN |
| Vic Willis | ATL | 2.81 | 190304290_ATL_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roy Evans | LAN | -1.26 | 190304280_ATL_LAN |
| Bill Bernhard | CLE | -1.18 | 190304290_BAL_CLE |
| Ed Poole | CIN | -1.02 | 190304290_CHN_CIN |
| Mike O'Neill | SLN | -0.78 | 190304270_PIT_SLN |
| Chief Bender | OAK | -0.4 | 190304270_NYA_OAK |
Based on accumulated WAA for this season up to 1903-04-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 1.67 | Togie Pittinger | 27 | ATL |
| +003+ | 1.59 | Addie Joss | 17 | CLE |
| +004+ | 1.36 | Bill Donovan | 18 | DET |
| +005+ | 1.36 | George Mullin | 18 | DET |
| +006+ | 1.32 | Henry Schmidt | 36 | LAN |
| XXXXX | 1.13 | Cy Young | 25 | BOS |
| XXXXX | 1.03 | Jack Chesbro | 18 | NYA |
| XXXXX | 0.99 | Rube Waddell | 35 | OAK |
| XXXXX | 0.94 | Al Orth | 18 | MIN |
| XXXXX | 0.93 | Sam Leever | 20 | PIT |
| XXXXX | 0.9 | Oscar Jones | 29 | LAN |
| XXXXX | 0.89 | Mal Eason | 9 | DET |
| XXXXX | 0.83 | Tom Hughes | 12 | BOS |
| XXXXX | 0.8 | Roy Patterson | 16 | CHA |
| XXXXX | 0.73 | Casey Patten | 18 | MIN |
| XXXXX | 0.68 | Brickyard Kennedy | 9 | PIT |
| XXXXX | 0.66 | Chief Bender | 15 | OAK |
| XXXXX | 0.64 | Earl Moore | 8 | CLE |
| XXXXX | 0.6 | Bob Wicker | 14 | TOT |
| XXXXX | 0.59 | Ed Siever | 10 | BAL |
| XXXXX | 0.49 | Chappie McFarland | 9 | SLN |
| XXXXX | 0.41 | Jesse Tannehill | 12 | NYA |
| XXXXX | 0.37 | Mordecai Brown | 14 | SLN |
| XXXXX | 0.37 | Roscoe Miller | 9 | SFN |
| XXXXX | 0.36 | Eddie Plank | 12 | OAK |
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