| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ken Waldichuk | OAK | -6.23 | 202305280_HOU_OAK |
| Austin Gomber | COL | -3.26 | 202305280_NYN_COL |
| Graham Ashcraft | CIN | -1.39 | 202305280_CIN_CHN |
| Marco Gonzales | SEA | -1.28 | 202305280_PIT_SEA |
| Matthew Boyd | DET | -1.18 | 202305290_TEX_DET |
Based on accumulated WAA for this season up to 2023-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 3.53 | Bryce Elder | 65.7 | ATL |
| +005+ | 3.5 | Shane McClanahan | 69.7 | TBA |
| +007+ | 3.24 | Eduardo Rodriguez | 67.7 | DET |
| +008+ | 3.12 | Nathan Eovaldi | 74.3 | TEX |
| +009+ | 3.12 | Sonny Gray | 60.3 | MIN |
| +010+ | 3.06 | Framber Valdez | 72 | HOU |
| +015+ | 2.78 | Marcus Stroman | 73 | CHN |
| +021+ | 2.52 | Zac Gallen | 72.7 | ARI |
| +026+ | 2.2 | Justin Steele | 65 | CHN |
| +028+ | 2.18 | Luis Castillo | 63.7 | SEA |
| +031+ | 2.13 | Gerrit Cole | 73.7 | NYA |
| +032+ | 2.12 | Josiah Gray | 61.7 | WAS |
| +033+ | 2.1 | Joe Ryan | 65 | MIN |
| +035+ | 2.06 | Tony Gonsolin | 35.7 | LAN |
| +036+ | 1.99 | Shohei Ohtani | 65 | ANA |
| +037+ | 1.96 | Mitch Keller | 68.7 | PIT |
| +038+ | 1.9 | Jon Gray | 57.7 | TEX |
| +039+ | 1.89 | Kevin Gausman | 68.3 | TOR |
| +040+ | 1.87 | Shane Bieber | 71 | CLE |
| +042+ | 1.86 | Spencer Strider | 63.7 | ATL |
| +043+ | 1.85 | Logan Webb | 72 | SFN |
| +044+ | 1.83 | Cristian Javier | 63.7 | HOU |
| +055+ | 1.7 | Alex Cobb | 62 | SFN |
| +058+ | 1.63 | Merrill Kelly | 63.7 | ARI |
| +079+ | 1.45 | Hunter Brown | 57.7 | HOU |
_