| Starter | Tm | Tier | Game |
|---|---|---|---|
| Buster Brown | SLN | -1.58 | 190705050_SLN_CIN |
| Jimmy Dygert | OAK | -0.15 | 190705040_NYA_OAK |
| Jim Pastorius | LAN | -0.07 | 190705040_LAN_SFN |
| Orval Overall | CHN | -0.04 | 190705050_PIT_CHN |
| Al Orth | NYA | -0.03 | 190705040_NYA_OAK |
Based on accumulated WAA for this season up to 1907-05-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.43 | Addie Joss | 45 | CLE |
| +003+ | 2.19 | Carl Lundgren | 32 | CHN |
| +004+ | 1.94 | Lefty Leifield | 33.3 | PIT |
| +005+ | 1.74 | Nick Altrock | 51 | CHA |
| +006+ | 1.57 | Ed Walsh | 42.7 | CHA |
| +007+ | 1.55 | Bob Ewing | 47 | CIN |
| +009+ | 1.39 | Ralph Glaze | 27 | BOS |
| +010+ | 1.32 | Harry Howell | 53.7 | BAL |
| XXXXX | 1.22 | Ed Karger | 27 | SLN |
| XXXXX | 1.16 | George Mullin | 58 | DET |
| XXXXX | 1.16 | Christy Mathewson | 26 | SFN |
| XXXXX | 1.1 | Hooks Wiltse | 17 | SFN |
| XXXXX | 1.09 | Vive Lindaman | 27 | ATL |
| XXXXX | 1.06 | Orval Overall | 45 | CHN |
| XXXXX | 1.06 | Mordecai Brown | 17 | CHN |
| XXXXX | 0.94 | Elmer Stricklett | 25 | LAN |
| XXXXX | 0.92 | Johnny Lush | 44.3 | PHI |
| XXXXX | 0.81 | Tully Sparks | 24 | PHI |
| XXXXX | 0.77 | Cy Young | 44 | BOS |
| XXXXX | 0.74 | Jack Pfiester | 26.7 | CHN |
| XXXXX | 0.7 | Red Ames | 31 | SFN |
| XXXXX | 0.7 | Glenn Liebhardt | 39 | CLE |
| XXXXX | 0.6 | Vic Willis | 35 | PIT |
| XXXXX | 0.59 | Ed Siever | 35 | DET |
| XXXXX | 0.58 | Jack Powell | 10 | BAL |
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