| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 6.44 | 199105280_BOS_NYA |
| Chuck Finley | ANA | 4.89 | 199105290_ANA_CHA |
| Ramon Martinez | LAN | 4.76 | 199105300_CIN_LAN |
| Bob Welch | OAK | 3.72 | 199105300_OAK_TOR |
| Zane Smith | PIT | 3.62 | 199105290_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | MIN | -4.3 | 199105290_MIN_TEX |
| Walt Terrell | DET | -2.87 | 199105290_DET_MIL |
| Don August | MIL | -2 | 199105280_DET_MIL |
| Jeff Robinson | BAL | -1.54 | 199105290_CLE_BAL |
| Charlie Hough | CHA | -1.22 | 199105280_ANA_CHA |
Based on accumulated WAA for this season up to 1991-05-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.05 | Scott Erickson | 77.3 | MIN |
| +003+ | 3.07 | Tom Glavine | 72.3 | ATL |
| +004+ | 3.06 | Dennis Martinez | 74 | WAS |
| +005+ | 3.04 | Mike Morgan | 67.3 | LAN |
| +007+ | 2.98 | Tom Gordon | 57.7 | KCA |
| +009+ | 2.83 | Roger Clemens | 77 | BOS |
| +010+ | 2.75 | Zane Smith | 70 | PIT |
| +012+ | 2.58 | Frank Viola | 73 | NYN |
| +015+ | 2.51 | Tom Candiotti | 72 | CLE |
| +019+ | 2.28 | Jimmy Key | 66.7 | TOR |
| +022+ | 2.1 | Pete Harnisch | 65 | HOU |
| +024+ | 2.03 | Ramon Martinez | 70 | LAN |
| +025+ | 2.02 | Tommy Greene | 51.7 | PHI |
| +032+ | 1.82 | Greg Swindell | 73.7 | CLE |
| +035+ | 1.71 | Jimmy Jones | 65.3 | HOU |
| +037+ | 1.68 | Chris Bosio | 68.3 | MIL |
| +043+ | 1.63 | Bret Saberhagen | 70.3 | KCA |
| +046+ | 1.56 | Tim Belcher | 58 | LAN |
| +050+ | 1.5 | Jose Rijo | 65 | CIN |
| +073+ | 1.26 | Tom Browning | 71.7 | CIN |
| XXXXX | 1.15 | John Smiley | 54.7 | PIT |
| XXXXX | 1.15 | Randy Tomlin | 38.3 | PIT |
| XXXXX | 1.13 | Charlie Leibrandt | 64.7 | ATL |
| XXXXX | 1.11 | Terry Mulholland | 79.7 | PHI |
| XXXXX | 1.08 | Brian Holman | 68.3 | SEA |
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