| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Hawkins | OAK | -5.2 | 199105180_OAK_CLE |
| Jack Morris | MIN | -4.71 | 199105190_MIN_DET |
| Don August | MIL | -1.97 | 199105180_MIL_KCA |
| Charlie Hough | CHA | -1.84 | 199105170_TOR_CHA |
| Jeff Robinson | BAL | -1.58 | 199105180_ANA_BAL |
Based on accumulated WAA for this season up to 1991-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.49 | Scott Erickson | 62.3 | MIN |
| +003+ | 3.22 | Tom Candiotti | 61 | CLE |
| +004+ | 2.72 | Ramon Martinez | 58.3 | LAN |
| +005+ | 2.45 | Mike Morgan | 53 | LAN |
| +006+ | 2.42 | Tom Gordon | 43.3 | KCA |
| +009+ | 2.33 | Roger Clemens | 62 | BOS |
| +008+ | 2.33 | Dennis Martinez | 58.7 | WAS |
| +012+ | 2.29 | Frank Viola | 59.3 | NYN |
| +014+ | 2.03 | Tom Glavine | 54.3 | ATL |
| +018+ | 1.96 | Dwight Gooden | 60.3 | NYN |
| +021+ | 1.83 | Jimmy Key | 54 | TOR |
| +027+ | 1.55 | Greg Swindell | 58.7 | CLE |
| +028+ | 1.52 | Bret Saberhagen | 54.3 | KCA |
| +029+ | 1.5 | Terry Mulholland | 67 | PHI |
| +034+ | 1.44 | Zane Smith | 54 | PIT |
| +036+ | 1.39 | Jose DeLeon | 46.3 | SLN |
| +039+ | 1.35 | Chris Bosio | 53.7 | MIL |
| +047+ | 1.25 | Dan Petry | 35.7 | DET |
| XXXXX | 1.15 | Brian Holman | 56.3 | SEA |
| XXXXX | 1.15 | Todd Stottlemyre | 51 | TOR |
| XXXXX | 1.13 | Jose Rijo | 53 | CIN |
| XXXXX | 1.11 | Randy Tomlin | 29 | PIT |
| XXXXX | 1.04 | Chris Hammond | 33 | CIN |
| XXXXX | 1.03 | Pascual Perez | 11.7 | NYA |
| XXXXX | 1 | Kevin Tapani | 51 | MIN |
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