| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 7.12 | 199108212_CLE_BOS |
| Pete Harnisch | HOU | 5.13 | 199108210_SFN_HOU |
| Ramon Martinez | LAN | 3.65 | 199108200_SDN_LAN |
| Randy Tomlin | PIT | 3.36 | 199108210_PIT_PHI |
| Jose Rijo | CIN | 3.13 | 199108201_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Deshaies | HOU | -2.04 | 199108200_SFN_HOU |
| Jose Mesa | BAL | -2.01 | 199108200_BAL_TEX |
| Don August | MIL | -1.65 | 199108220_MIL_TOR |
| John Smoltz | ATL | -1.43 | 199108202_ATL_CIN |
| Walt Terrell | DET | -1.23 | 199108200_DET_CHA |
Based on accumulated WAA for this season up to 1991-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.36 | Dennis Martinez | 186.3 | WAS |
| +004+ | 7.16 | Tom Glavine | 182.7 | ATL |
| +005+ | 6.81 | Tom Candiotti | 181 | TOT |
| +010+ | 5.84 | Pete Harnisch | 171.7 | HOU |
| +012+ | 5.73 | Roger Clemens | 196.3 | BOS |
| +016+ | 5.08 | Mike Morgan | 173 | LAN |
| +018+ | 4.91 | Tim Belcher | 162 | LAN |
| +023+ | 4.31 | Jose Rijo | 142.3 | CIN |
| +027+ | 4.24 | Kevin Tapani | 187.7 | MIN |
| +029+ | 4.14 | Jose DeLeon | 149 | SLN |
| +035+ | 4 | Randy Tomlin | 123 | PIT |
| +037+ | 3.94 | Ramon Martinez | 174.3 | LAN |
| +047+ | 3.63 | Jim Abbott | 177.7 | ANA |
| +048+ | 3.61 | Scott Erickson | 158 | MIN |
| +050+ | 3.44 | Nolan Ryan | 127 | TEX |
| +052+ | 3.4 | Mark Langston | 191 | ANA |
| +055+ | 3.27 | Jimmy Key | 161.7 | TOR |
| +057+ | 3.24 | Tommy Greene | 156 | PHI |
| +064+ | 2.99 | Luis Aquino | 119.3 | KCA |
| +068+ | 2.86 | Greg Swindell | 185.3 | CLE |
| +071+ | 2.85 | Bruce Hurst | 184.3 | SDN |
| +072+ | 2.75 | Doug Drabek | 168.7 | PIT |
| +073+ | 2.75 | Greg Harris | 75.7 | SDN |
| +076+ | 2.68 | Mike Moore | 147.3 | OAK |
| +075+ | 2.68 | Bob Tewksbury | 142.3 | SLN |
_