| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 9.14 | 199109150_BOS_NYA |
| Tom Candiotti | TOR | 8.64 | 199109140_OAK_TOR |
| Jose Rijo | CIN | 4.53 | 199109150_HOU_CIN |
| Tim Belcher | LAN | 4.52 | 199109140_LAN_ATL |
| Kevin Tapani | MIN | 3.52 | 199109160_KCA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| 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 |
| Alex Fernandez | CHA | -1.77 | 199109140_CHA_ANA |
Based on accumulated WAA for this season up to 1991-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.55 | Tom Candiotti | 218.7 | TOT |
| +004+ | 8.04 | Roger Clemens | 239.3 | BOS |
| +005+ | 7.73 | Tom Glavine | 221 | ATL |
| +006+ | 7.65 | Dennis Martinez | 210.3 | WAS |
| +010+ | 6.47 | Jose Rijo | 177.3 | CIN |
| +016+ | 5.83 | Kevin Tapani | 223 | MIN |
| +017+ | 5.76 | Tim Belcher | 187.7 | LAN |
| +018+ | 5.73 | Jim Abbott | 212.3 | ANA |
| +020+ | 5.45 | Mike Morgan | 207.3 | LAN |
| +028+ | 4.92 | Greg Harris | 113.3 | SDN |
| +030+ | 4.84 | Mark Langston | 216.3 | ANA |
| +049+ | 3.76 | Andy Benes | 197 | SDN |
| +052+ | 3.68 | Jimmy Key | 187.3 | TOR |
| +053+ | 3.63 | Zane Smith | 204 | PIT |
| +055+ | 3.62 | Bob Tewksbury | 177.7 | SLN |
| +056+ | 3.61 | Bruce Hurst | 220.7 | SDN |
| +066+ | 3.37 | Jose Guzman | 145 | TEX |
| +068+ | 3.31 | Scott Erickson | 177.3 | MIN |
| +070+ | 3.27 | Randy Tomlin | 154.3 | PIT |
| +069+ | 3.27 | Doug Drabek | 204.7 | PIT |
| +071+ | 3.26 | Tommy Greene | 192.7 | PHI |
| +077+ | 3.08 | Charlie Leibrandt | 202.3 | ATL |
| +078+ | 3.06 | Chris Bosio | 181.3 | MIL |
| +080+ | 3.04 | Bill Wegman | 160.3 | MIL |
| +081+ | 3.04 | Nolan Ryan | 146 | TEX |
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