| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Glavine | ATL | 9.18 | 199109130_LAN_ATL |
| Dennis Martinez | WAS | 7.49 | 199109130_WAS_CHN |
| Pete Harnisch | HOU | 5.67 | 199109110_LAN_HOU |
| Kevin Tapani | MIN | 4.15 | 199109110_MIN_KCA |
| Mike Morgan | LAN | 3.79 | 199109130_LAN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | -4.93 | 199109130_OAK_TOR |
| Jose Mesa | BAL | -2.89 | 199109120_CLE_BAL |
| Jeff Johnson | NYA | -2.69 | 199109130_BOS_NYA |
| Jack Armstrong | CIN | -2.66 | 199109130_HOU_CIN |
| Scott Lewis | ANA | -1.43 | 199109110_TEX_ANA |
Based on accumulated WAA for this season up to 1991-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.21 | Roger Clemens | 232.3 | BOS |
| +004+ | 7.92 | Tom Candiotti | 211.7 | TOT |
| +005+ | 7.74 | Tom Glavine | 221 | ATL |
| +006+ | 7.65 | Dennis Martinez | 210.3 | WAS |
| +014+ | 5.85 | Jose Rijo | 170.3 | CIN |
| +015+ | 5.77 | Tim Belcher | 185 | LAN |
| +016+ | 5.74 | Jim Abbott | 212.3 | ANA |
| +018+ | 5.53 | Pete Harnisch | 193.7 | HOU |
| +019+ | 5.5 | Mike Morgan | 207.3 | LAN |
| +024+ | 5.12 | Kevin Tapani | 215.7 | MIN |
| +035+ | 4.41 | Greg Harris | 105.7 | SDN |
| +041+ | 4.11 | Mark Langston | 208.3 | ANA |
| +045+ | 3.89 | Ramon Martinez | 199 | LAN |
| +050+ | 3.72 | Zane Smith | 196 | PIT |
| +051+ | 3.65 | Jimmy Key | 182.3 | TOR |
| +054+ | 3.59 | Bruce Hurst | 220.7 | SDN |
| +060+ | 3.42 | Randy Tomlin | 147 | PIT |
| +065+ | 3.31 | Andy Benes | 190 | SDN |
| +067+ | 3.28 | Scott Erickson | 177.3 | MIN |
| +069+ | 3.25 | Doug Drabek | 204.7 | PIT |
| +071+ | 3.24 | Jose Guzman | 139 | TEX |
| +072+ | 3.18 | Tommy Greene | 185 | PHI |
| +079+ | 3.09 | Charlie Leibrandt | 202.3 | ATL |
| +080+ | 3.05 | Chris Bosio | 181.3 | MIL |
| +081+ | 3.03 | Nolan Ryan | 146 | TEX |
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