| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 9.14 | 199109150_BOS_NYA |
| Jose Rijo | CIN | 4.53 | 199109150_HOU_CIN |
| Pete Harnisch | HOU | 4.03 | 199109170_HOU_SDN |
| Kevin Tapani | MIN | 3.52 | 199109160_KCA_MIN |
| Greg W. Harris | SDN | 2.56 | 199109160_HOU_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jose Mesa | BAL | -3.96 | 199109170_BAL_BOS |
| Wade Taylor | NYA | -2.85 | 199109160_MIL_NYA |
| Mark Gubicza | KCA | -2.55 | 199109160_KCA_MIN |
| Don August | MIL | -2.47 | 199109160_MIL_NYA |
| Rich DeLucia | SEA | -2.33 | 199109150_SEA_KCA |
Based on accumulated WAA for this season up to 1991-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.48 | Tom Candiotti | 218.7 | TOT |
| +004+ | 7.99 | Roger Clemens | 239.3 | BOS |
| +006+ | 7.7 | Tom Glavine | 221 | ATL |
| +007+ | 7.62 | Dennis Martinez | 210.3 | WAS |
| +010+ | 6.44 | Jose Rijo | 177.3 | CIN |
| +013+ | 6.07 | Pete Harnisch | 199.7 | HOU |
| +016+ | 5.78 | Kevin Tapani | 223 | MIN |
| +018+ | 5.72 | Tim Belcher | 187.7 | LAN |
| +019+ | 5.68 | Jim Abbott | 212.3 | ANA |
| +022+ | 5.41 | Mike Morgan | 207.3 | LAN |
| +028+ | 4.89 | Greg Harris | 113.3 | SDN |
| +030+ | 4.79 | Mark Langston | 216.3 | ANA |
| +047+ | 3.84 | Chris Bosio | 190.3 | MIL |
| +054+ | 3.71 | Andy Benes | 197 | SDN |
| +055+ | 3.61 | Jimmy Key | 187.3 | TOR |
| +056+ | 3.59 | Bob Tewksbury | 177.7 | SLN |
| +057+ | 3.58 | Zane Smith | 204 | PIT |
| +059+ | 3.54 | Doug Drabek | 212.7 | PIT |
| +068+ | 3.34 | Jose Guzman | 145 | TEX |
| +069+ | 3.27 | Charlie Leibrandt | 209.3 | ATL |
| +070+ | 3.27 | Scott Erickson | 177.3 | MIN |
| +072+ | 3.24 | Bruce Hurst | 221.7 | SDN |
| +074+ | 3.23 | Randy Tomlin | 154.3 | PIT |
| +075+ | 3.22 | Tommy Greene | 192.7 | PHI |
| +083+ | 3.01 | Nolan Ryan | 146 | TEX |
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