| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Waddell | OAK | 7.24 | 190306270_OAK_DET |
| Cy Young | BOS | 5.8 | 190306281_BOS_BAL |
| Bill Donovan | DET | 3.71 | 190306270_OAK_DET |
| Doc White | CHA | 3.06 | 190306282_NYA_CHA |
| Addie Joss | CLE | 1.87 | 190306272_MIN_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Poole | CIN | -2.11 | 190306270_CIN_LAN |
| Chick Fraser | PHI | -1.62 | 190306270_SLN_PHI |
| Togie Pittinger | ATL | -1.54 | 190306272_CHN_ATL |
| Bob Rhoads | SLN | -0.65 | 190306270_SLN_PHI |
| Ned Garvin | LAN | -0.61 | 190306270_CIN_LAN |
Based on accumulated WAA for this season up to 1903-06-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.25 | Rube Waddell | 177.3 | OAK |
| +002+ | 6.62 | Cy Young | 147.7 | BOS |
| +003+ | 6.07 | Addie Joss | 137.3 | CLE |
| +004+ | 5.81 | George Mullin | 135 | DET |
| +005+ | 5.57 | Eddie Plank | 135 | OAK |
| +006+ | 5.34 | Bill Donovan | 113.7 | DET |
| +007+ | 5.32 | Earl Moore | 117 | CLE |
| +008+ | 5.03 | Doc White | 125.3 | CHA |
| +009+ | 4.81 | Bill Dinneen | 134.7 | BOS |
| +010+ | 4.68 | Jack Chesbro | 149.3 | NYA |
| +011+ | 3.78 | Sam Leever | 113 | PIT |
| +012+ | 3.63 | Roy Patterson | 109 | CHA |
| +013+ | 3.48 | Willie Sudhoff | 104 | BAL |
| +015+ | 3.35 | Chief Bender | 131.3 | OAK |
| +017+ | 3.14 | Joe McGinnity | 185.7 | SFN |
| +018+ | 3.12 | Tom Hughes | 92.7 | BOS |
| +022+ | 2.78 | Red Donahue | 122 | BAL |
| +023+ | 2.72 | Bill Bernhard | 116 | CLE |
| +027+ | 2.43 | Ed Siever | 76 | BAL |
| +031+ | 2.22 | John Deering | 49.7 | DET |
| +033+ | 2.13 | Christy Mathewson | 152 | SFN |
| +036+ | 2.04 | Jesse Tannehill | 114.3 | NYA |
| +037+ | 1.97 | Jake Weimer | 124.3 | CHN |
| +039+ | 1.93 | Barney Wolfe | 60.3 | NYA |
| +049+ | 1.58 | Jack Sutthoff | 108.7 | CIN |
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