| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 8.43 | 199105080_MIN_BOS |
| Ed Whitson | SDN | 4.05 | 199105100_WAS_SDN |
| Ramon Martinez | LAN | 3.28 | 199105080_LAN_NYN |
| Zane Smith | PIT | 3.19 | 199105080_CIN_PIT |
| Bob Welch | OAK | 3.02 | 199105100_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | MIN | -5.06 | 199105080_MIN_BOS |
| Melido Perez | CHA | -3 | 199105090_CHA_TOR |
| Walt Terrell | DET | -2.69 | 199105100_DET_MIN |
| Derek Lilliquist | SDN | -1.56 | 199105090_PHI_SDN |
| Storm Davis | KCA | -1.15 | 199105080_KCA_DET |
Based on accumulated WAA for this season up to 1991-05-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.43 | Roger Clemens | 49 | BOS |
| +002+ | 2.54 | Tom Candiotti | 44 | CLE |
| +003+ | 2.48 | Scott Erickson | 49 | MIN |
| +004+ | 2.36 | Ramon Martinez | 45 | LAN |
| +005+ | 2.27 | Pete Harnisch | 40.7 | HOU |
| +006+ | 2.21 | Mike Morgan | 38.7 | LAN |
| +008+ | 1.99 | Tom Gordon | 27 | KCA |
| +011+ | 1.83 | Dennis Martinez | 43.7 | WAS |
| +014+ | 1.74 | Zane Smith | 43.7 | PIT |
| +019+ | 1.56 | Vicente Palacios | 29.7 | PIT |
| +020+ | 1.53 | Jose Mesa | 40.3 | BAL |
| +023+ | 1.5 | Jose DeLeon | 36 | SLN |
| +025+ | 1.47 | Frank Viola | 43.3 | NYN |
| +032+ | 1.37 | Dan Petry | 23 | DET |
| +031+ | 1.37 | Tim Belcher | 36.3 | LAN |
| +035+ | 1.29 | Tom Glavine | 39.3 | ATL |
| +037+ | 1.28 | Charles Nagy | 44 | CLE |
| XXXXX | 1.2 | Bret Saberhagen | 46.3 | KCA |
| XXXXX | 1.2 | Tom Bolton | 30.7 | BOS |
| XXXXX | 1.19 | Kevin Tapani | 44 | MIN |
| XXXXX | 1.18 | Jimmy Key | 40 | TOR |
| XXXXX | 1.11 | Dwight Gooden | 51.3 | NYN |
| XXXXX | 0.99 | Greg Hibbard | 43.7 | CHA |
| XXXXX | 0.9 | Randy Tomlin | 27 | PIT |
| XXXXX | 0.85 | Chris Bosio | 46.3 | MIL |
_