| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.67 | 199110010_DET_BOS |
| Jose Rijo | CIN | 6.13 | 199110010_ATL_CIN |
| Pete Harnisch | HOU | 5.25 | 199109290_ATL_HOU |
| Jim Abbott | ANA | 4.61 | 199109290_ANA_KCA |
| Mike Morgan | LAN | 3.86 | 199109290_SFN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jose Mesa | BAL | -4.78 | 199109290_BAL_DET |
| Mark Gubicza | KCA | -4.32 | 199110010_OAK_KCA |
| Jack Armstrong | CIN | -2.05 | 199109300_ATL_CIN |
| Shawn Boskie | CHN | -1.81 | 199109300_CHN_PHI |
| Joe Slusarski | OAK | -1.38 | 199109290_TEX_OAK |
Based on accumulated WAA for this season up to 1991-10-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.58 | Roger Clemens | 262.3 | BOS |
| +008+ | 7.25 | Tom Glavine | 238.7 | ATL |
| +009+ | 7.05 | Tom Candiotti | 231.7 | TOT |
| +012+ | 6.67 | Jose Rijo | 196.3 | CIN |
| +015+ | 6.23 | Pete Harnisch | 211.7 | HOU |
| +017+ | 6.16 | Tim Belcher | 202.3 | LAN |
| +018+ | 5.87 | Mike Morgan | 229.3 | LAN |
| +021+ | 5.72 | Kevin Tapani | 239 | MIN |
| +024+ | 5.51 | Jim Abbott | 234 | ANA |
| +027+ | 5.31 | Jose DeLeon | 162.7 | SLN |
| +028+ | 5.18 | Greg Harris | 126 | SDN |
| +033+ | 4.89 | Mark Langston | 238.7 | ANA |
| +042+ | 4.6 | Mike Moore | 204 | OAK |
| +045+ | 4.45 | Bill Wegman | 186.3 | MIL |
| +050+ | 4.26 | Andy Benes | 217.3 | SDN |
| +056+ | 4.09 | Doug Drabek | 229.7 | PIT |
| +057+ | 4.06 | Bret Saberhagen | 194.3 | KCA |
| +058+ | 4.03 | Jimmy Key | 209.3 | TOR |
| +059+ | 3.91 | Zane Smith | 223 | PIT |
| +068+ | 3.51 | Nolan Ryan | 166 | TEX |
| +071+ | 3.34 | John Smiley | 200.7 | PIT |
| +072+ | 3.32 | Chris Bosio | 201.7 | MIL |
| +073+ | 3.31 | Ramon Martinez | 215 | LAN |
| +084+ | 3.09 | Bob Ojeda | 189.3 | LAN |
| +083+ | 3.09 | Bob Tewksbury | 191 | SLN |
_