| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Glavine | ATL | 9.18 | 199109130_LAN_ATL |
| Roger Clemens | BOS | 9.14 | 199109150_BOS_NYA |
| Tom Candiotti | TOR | 8.64 | 199109140_OAK_TOR |
| Dennis Martinez | WAS | 7.49 | 199109130_WAS_CHN |
| Jose Rijo | CIN | 4.53 | 199109150_HOU_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | OAK | -4.93 | 199109130_OAK_TOR |
| Jeff Johnson | NYA | -2.69 | 199109130_BOS_NYA |
| Jack Armstrong | CIN | -2.66 | 199109130_HOU_CIN |
| Rich DeLucia | SEA | -2.33 | 199109150_SEA_KCA |
| Alex Fernandez | CHA | -1.77 | 199109140_CHA_ANA |
Based on accumulated WAA for this season up to 1991-09-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.54 | Tom Candiotti | 218.7 | TOT |
| +004+ | 8.03 | Roger Clemens | 239.3 | BOS |
| +005+ | 7.71 | Tom Glavine | 221 | ATL |
| +006+ | 7.64 | Dennis Martinez | 210.3 | WAS |
| +010+ | 6.49 | Jose Rijo | 177.3 | CIN |
| +016+ | 5.79 | Tim Belcher | 187.7 | LAN |
| +017+ | 5.72 | Jim Abbott | 212.3 | ANA |
| +018+ | 5.54 | Pete Harnisch | 193.7 | HOU |
| +019+ | 5.48 | Mike Morgan | 207.3 | LAN |
| +024+ | 5.15 | Kevin Tapani | 215.7 | MIN |
| +030+ | 4.82 | Mark Langston | 216.3 | ANA |
| +038+ | 4.42 | Greg Harris | 105.7 | SDN |
| +048+ | 3.74 | Andy Benes | 197 | SDN |
| +051+ | 3.72 | Zane Smith | 196 | PIT |
| +053+ | 3.64 | Jimmy Key | 182.3 | TOR |
| +056+ | 3.6 | Bruce Hurst | 220.7 | SDN |
| +064+ | 3.36 | Jose Guzman | 145 | TEX |
| +066+ | 3.3 | Scott Erickson | 177.3 | MIN |
| +071+ | 3.26 | Randy Tomlin | 154.3 | PIT |
| +070+ | 3.26 | Doug Drabek | 204.7 | PIT |
| +072+ | 3.25 | Tommy Greene | 192.7 | PHI |
| +074+ | 3.05 | Charlie Leibrandt | 202.3 | ATL |
| +076+ | 3.05 | Chris Bosio | 181.3 | MIL |
| +078+ | 3.03 | Nolan Ryan | 146 | TEX |
| +079+ | 3.03 | Bill Wegman | 160.3 | MIL |
_