| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 8.23 | 199109050_SEA_BOS |
| Tom Candiotti | TOR | 7.99 | 199109070_TOR_CLE |
| Pete Harnisch | HOU | 5.31 | 199109060_PHI_HOU |
| Kevin Tapani | MIN | 3.72 | 199109060_NYA_MIN |
| Ramon Martinez | LAN | 2.61 | 199109061_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jose Mesa | BAL | -2.96 | 199109070_KCA_BAL |
| Wade Taylor | NYA | -2.9 | 199109060_NYA_MIN |
| Bobby Witt | TEX | -2.29 | 199109070_CHA_TEX |
| Mark Gubicza | KCA | -1.48 | 199109050_KCA_CHA |
| Joe Slusarski | OAK | -1.29 | 199109070_OAK_DET |
Based on accumulated WAA for this season up to 1991-09-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.23 | Tom Glavine | 205.7 | ATL |
| +002+ | 7.92 | Tom Candiotti | 211.7 | TOT |
| +005+ | 7.38 | Roger Clemens | 223.3 | BOS |
| +012+ | 6.4 | Pete Harnisch | 191.7 | HOU |
| +015+ | 5.68 | Tim Belcher | 184 | LAN |
| +016+ | 5.49 | Kevin Tapani | 210.7 | MIN |
| +018+ | 5.29 | Jose Rijo | 164.3 | CIN |
| +021+ | 4.91 | Mike Morgan | 194 | LAN |
| +028+ | 4.62 | Jim Abbott | 197.3 | ANA |
| +029+ | 4.61 | Ramon Martinez | 195.3 | LAN |
| +030+ | 4.52 | Jimmy Key | 180.3 | TOR |
| +042+ | 3.94 | Mark Langston | 201.3 | ANA |
| +045+ | 3.88 | Bruce Hurst | 215 | SDN |
| +046+ | 3.88 | Greg Harris | 97.7 | SDN |
| +047+ | 3.87 | Randy Tomlin | 143 | PIT |
| +060+ | 3.38 | Scott Erickson | 169.3 | MIN |
| +067+ | 3.07 | Bob Tewksbury | 164.7 | SLN |
| +069+ | 2.97 | Bill Wegman | 143.7 | MIL |
| +071+ | 2.89 | Doug Drabek | 198.7 | PIT |
| +072+ | 2.88 | Mark Gardner | 142 | WAS |
| +074+ | 2.87 | Zane Smith | 187 | PIT |
| +078+ | 2.75 | Jose Guzman | 131 | TEX |
| +080+ | 2.74 | Greg Swindell | 209 | CLE |
| +084+ | 2.66 | Charlie Leibrandt | 195.3 | ATL |
| +086+ | 2.64 | Luis Aquino | 131.3 | KCA |
_