| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Hawkins | OAK | -5.2 | 199105180_OAK_CLE |
| Don August | MIL | -1.97 | 199105180_MIL_KCA |
| Charlie Hough | CHA | -1.84 | 199105170_TOR_CHA |
| Jim Abbott | ANA | -1.81 | 199105160_ANA_NYA |
| Jeff Robinson | BAL | -1.58 | 199105180_ANA_BAL |
Based on accumulated WAA for this season up to 1991-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.46 | Scott Erickson | 62.3 | MIN |
| +002+ | 3.21 | Tom Candiotti | 61 | CLE |
| +004+ | 2.6 | Ramon Martinez | 52.3 | LAN |
| +005+ | 2.45 | Mike Morgan | 53 | LAN |
| +007+ | 2.42 | Tom Gordon | 43.3 | KCA |
| +008+ | 2.38 | Dennis Martinez | 58.7 | WAS |
| +010+ | 2.31 | Roger Clemens | 62 | BOS |
| +012+ | 2.26 | Frank Viola | 59.3 | NYN |
| +016+ | 1.96 | Tom Bolton | 39 | BOS |
| +017+ | 1.94 | Zane Smith | 50.3 | PIT |
| +018+ | 1.93 | Dwight Gooden | 60.3 | NYN |
| +019+ | 1.91 | Pete Harnisch | 45.7 | HOU |
| +021+ | 1.81 | Jimmy Key | 54 | TOR |
| +031+ | 1.54 | Greg Swindell | 58.7 | CLE |
| +032+ | 1.52 | Bret Saberhagen | 54.3 | KCA |
| +033+ | 1.5 | Tom Glavine | 48.3 | ATL |
| +035+ | 1.39 | Jose DeLeon | 46.3 | SLN |
| +039+ | 1.34 | Chris Bosio | 53.7 | MIL |
| XXXXX | 1.12 | Jose Rijo | 53 | CIN |
| XXXXX | 1.03 | Chris Hammond | 33 | CIN |
| XXXXX | 0.98 | Kevin Tapani | 51 | MIN |
| XXXXX | 0.97 | Brian Holman | 49.7 | SEA |
| XXXXX | 0.96 | Dan Petry | 27.7 | DET |
| XXXXX | 0.95 | Nolan Ryan | 49 | TEX |
| XXXXX | 0.94 | Terry Mulholland | 58 | PHI |
_