| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Hawkins | OAK | -6.31 | 199106152_OAK_MIL |
| Jack Morris | MIN | -2.01 | 199106140_MIN_CLE |
| Alex Fernandez | CHA | -1.71 | 199106160_KCA_CHA |
| Tim Leary | NYA | -1.4 | 199106150_NYA_TEX |
| Randy Johnson | SEA | -1.34 | 199106150_DET_SEA |
Based on accumulated WAA for this season up to 1991-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.33 | Scott Erickson | 101.3 | MIN |
| +002+ | 4.38 | Dennis Martinez | 102.7 | WAS |
| +003+ | 4.18 | Greg Swindell | 109.7 | CLE |
| +004+ | 4.1 | Roger Clemens | 102 | BOS |
| +006+ | 3.82 | Tom Candiotti | 96.3 | CLE |
| +009+ | 3.52 | Pete Harnisch | 88 | HOU |
| +013+ | 3.25 | Tom Glavine | 95 | ATL |
| +015+ | 3.1 | Jimmy Key | 87.7 | TOR |
| +016+ | 3.1 | Mike Morgan | 87 | LAN |
| +018+ | 2.77 | Dennis Rasmussen | 38 | SDN |
| +020+ | 2.75 | Tommy Greene | 71.7 | PHI |
| +022+ | 2.62 | David Cone | 92 | NYN |
| +024+ | 2.55 | Tim Belcher | 78.7 | LAN |
| +025+ | 2.51 | Frank Viola | 102.3 | NYN |
| +026+ | 2.51 | Ramon Martinez | 92 | LAN |
| +031+ | 2.38 | Jose Rijo | 95.7 | CIN |
| +033+ | 2.22 | Zane Smith | 87.3 | PIT |
| +035+ | 2.12 | Doug Drabek | 86.3 | PIT |
| +042+ | 2.06 | Gerald Alexander | 43.3 | TEX |
| +043+ | 2.04 | Jose DeLeon | 76 | SLN |
| +045+ | 2.01 | Bruce Hurst | 95.3 | SDN |
| +050+ | 1.9 | Charlie Leibrandt | 91.7 | ATL |
| +052+ | 1.88 | Bret Saberhagen | 91.3 | KCA |
| +061+ | 1.78 | Dave Wells | 82.3 | TOR |
| +071+ | 1.58 | Greg Maddux | 100 | CHN |
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