| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Candiotti | TOR | 9.52 | 199109180_TOR_SEA |
| Roger Clemens | BOS | 8.24 | 199109200_NYA_BOS |
| Tom Glavine | ATL | 7.82 | 199109180_ATL_SDN |
| Dennis Martinez | WAS | 7.65 | 199109180_WAS_PHI |
| Jose Rijo | CIN | 5.36 | 199109200_CIN_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | -5.48 | 199109180_OAK_CHA |
| Jeff Johnson | NYA | -3.24 | 199109180_MIL_NYA |
| Dave Johnson | BAL | -3.17 | 199109180_BAL_BOS |
| Rich DeLucia | SEA | -2.43 | 199109200_KCA_SEA |
| Jack Armstrong | CIN | -2.25 | 199109180_CIN_SFN |
Based on accumulated WAA for this season up to 1991-09-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.88 | Tom Candiotti | 226.3 | TOT |
| +003+ | 8.75 | Roger Clemens | 248.3 | BOS |
| +005+ | 8.09 | Dennis Martinez | 218.3 | WAS |
| +007+ | 7.49 | Tom Glavine | 228.7 | ATL |
| +010+ | 6.56 | Jose Rijo | 183.3 | CIN |
| +014+ | 6.05 | Pete Harnisch | 199.7 | HOU |
| +016+ | 5.9 | Jim Abbott | 220 | ANA |
| +018+ | 5.73 | Kevin Tapani | 223 | MIN |
| +019+ | 5.65 | Tim Belcher | 194.3 | LAN |
| +024+ | 5.36 | Mike Morgan | 214.3 | LAN |
| +025+ | 5.22 | Mark Langston | 226.3 | ANA |
| +030+ | 4.86 | Greg Harris | 113.3 | SDN |
| +047+ | 3.81 | Andy Benes | 203.3 | SDN |
| +048+ | 3.79 | Chris Bosio | 190.3 | MIL |
| +055+ | 3.59 | Jack McDowell | 239 | CHA |
| +056+ | 3.57 | Bob Tewksbury | 177.7 | SLN |
| +060+ | 3.53 | Zane Smith | 204 | PIT |
| +062+ | 3.51 | Jimmy Key | 187.3 | TOR |
| +064+ | 3.49 | Doug Drabek | 212.7 | PIT |
| +068+ | 3.35 | Tommy Greene | 201.7 | PHI |
| +073+ | 3.32 | Jose Guzman | 145 | TEX |
| +076+ | 3.23 | Randy Tomlin | 159.3 | PIT |
| +077+ | 3.2 | Charlie Leibrandt | 209.3 | ATL |
| +079+ | 3.17 | Bruce Hurst | 221.7 | SDN |
| +084+ | 2.97 | Bill Wegman | 160.3 | MIL |
_