| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dennis Martinez | WAS | 4.91 | 199105210_PHI_WAS |
| Bret Saberhagen | KCA | 4.39 | 199105200_SEA_KCA |
| Frank Viola | NYN | 4.31 | 199105220_CHN_NYN |
| Tom Candiotti | CLE | 3.84 | 199105220_NYA_CLE |
| Doug Drabek | PIT | 3.33 | 199105220_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Melido Perez | CHA | -3.32 | 199105200_CHA_ANA |
| Kevin Gross | LAN | -3.2 | 199105200_LAN_HOU |
| Walt Terrell | DET | -2.56 | 199105200_BAL_DET |
| Jamie Moyer | SLN | -1.43 | 199105210_SLN_PIT |
| Allan Anderson | MIN | -1.18 | 199105220_TEX_MIN |
Based on accumulated WAA for this season up to 1991-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.43 | Scott Erickson | 62.3 | MIN |
| +003+ | 3.12 | Dennis Martinez | 67.7 | WAS |
| +004+ | 3.01 | Tom Gordon | 52.3 | KCA |
| +005+ | 2.74 | Ramon Martinez | 58.3 | LAN |
| +007+ | 2.41 | Mike Morgan | 59.3 | LAN |
| +009+ | 2.33 | Roger Clemens | 62 | BOS |
| +012+ | 2.13 | Greg Swindell | 67.7 | CLE |
| +015+ | 2.03 | Tom Glavine | 54.3 | ATL |
| +016+ | 2.01 | Frank Viola | 65.7 | NYN |
| +020+ | 1.9 | Tom Candiotti | 65 | CLE |
| +022+ | 1.84 | Jimmy Key | 54 | TOR |
| +029+ | 1.67 | Chris Bosio | 61.7 | MIL |
| +031+ | 1.52 | Terry Mulholland | 67 | PHI |
| +032+ | 1.52 | Dave Wells | 52.7 | TOR |
| +036+ | 1.44 | Zane Smith | 54 | PIT |
| +039+ | 1.4 | Jose DeLeon | 46.3 | SLN |
| +040+ | 1.39 | Charlie Leibrandt | 59 | ATL |
| +054+ | 1.26 | Dwight Gooden | 66.7 | NYN |
| +053+ | 1.26 | Jimmy Jones | 50 | HOU |
| +055+ | 1.25 | Dan Petry | 35.7 | DET |
| XXXXX | 1.18 | Brian Holman | 56.3 | SEA |
| XXXXX | 1.16 | Todd Stottlemyre | 51 | TOR |
| XXXXX | 1.11 | Randy Tomlin | 29 | PIT |
| XXXXX | 1.1 | Jim Acker | 29 | TOR |
| XXXXX | 1.04 | Pascual Perez | 11.7 | NYA |
_