| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.67 | 199110010_DET_BOS |
| Tom Glavine | ATL | 6.3 | 199110020_ATL_CIN |
| Jose Rijo | CIN | 6.13 | 199110010_ATL_CIN |
| Tom Candiotti | TOR | 5.95 | 199110020_ANA_TOR |
| Tim Belcher | LAN | 4.5 | 199110020_SDN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mark Gubicza | KCA | -4.32 | 199110010_OAK_KCA |
| Dave Johnson | BAL | -3.94 | 199109300_BAL_DET |
| Jack Armstrong | CIN | -2.05 | 199109300_ATL_CIN |
| Shawn Boskie | CHN | -1.81 | 199109300_CHN_PHI |
| Dave Eiland | NYA | -1.16 | 199110010_BAL_NYA |
Based on accumulated WAA for this season up to 1991-10-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.6 | Roger Clemens | 262.3 | BOS |
| +007+ | 7.79 | Tom Glavine | 246.7 | ATL |
| +009+ | 7.01 | Tom Candiotti | 238 | TOT |
| +011+ | 6.68 | Jose Rijo | 196.3 | CIN |
| +016+ | 6.25 | Pete Harnisch | 211.7 | HOU |
| +017+ | 6.18 | Tim Belcher | 209.3 | LAN |
| +018+ | 5.89 | Mike Morgan | 229.3 | LAN |
| +021+ | 5.73 | Kevin Tapani | 239 | MIN |
| +023+ | 5.54 | Jim Abbott | 234 | ANA |
| +027+ | 5.32 | Jose DeLeon | 162.7 | SLN |
| +028+ | 5.2 | Greg Harris | 133 | SDN |
| +033+ | 4.92 | Mark Langston | 238.7 | ANA |
| +040+ | 4.62 | Mike Moore | 204 | OAK |
| +045+ | 4.47 | Bill Wegman | 186.3 | MIL |
| +050+ | 4.27 | Andy Benes | 217.3 | SDN |
| +055+ | 4.08 | Doug Drabek | 229.7 | PIT |
| +057+ | 4.04 | Jimmy Key | 209.3 | TOR |
| +058+ | 3.89 | Zane Smith | 223 | PIT |
| +065+ | 3.64 | Randy Tomlin | 174 | PIT |
| +066+ | 3.63 | Bret Saberhagen | 196.3 | KCA |
| +068+ | 3.52 | Nolan Ryan | 166 | TEX |
| +074+ | 3.33 | Ramon Martinez | 215 | LAN |
| +082+ | 3.1 | Bob Ojeda | 189.3 | LAN |
| +088+ | 3.03 | Scott Erickson | 198 | MIN |
| +091+ | 3.01 | Jose Guzman | 169.7 | TEX |
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