| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 6.99 | 199108160_KCA_BOS |
| Ramon Martinez | LAN | 4.84 | 199108150_HOU_LAN |
| Pete Harnisch | HOU | 4.33 | 199108150_HOU_LAN |
| Scott Erickson | MIN | 3.79 | 199108150_ANA_MIN |
| Randy Tomlin | PIT | 2.92 | 199108160_NYN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Johnson | BAL | -3.93 | 199108160_BAL_MIL |
| Bobby Witt | TEX | -2.17 | 199108162_TEX_CLE |
| John Smoltz | ATL | -1.99 | 199108150_ATL_SDN |
| Don August | MIL | -1.67 | 199108160_BAL_MIL |
| Jim Deshaies | HOU | -1.5 | 199108140_HOU_SDN |
Based on accumulated WAA for this season up to 1991-08-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.53 | Dennis Martinez | 177.3 | WAS |
| +003+ | 7.04 | Tom Glavine | 176.7 | ATL |
| +005+ | 6.33 | Tom Candiotti | 174 | TOT |
| +008+ | 6.01 | Pete Harnisch | 164.7 | HOU |
| +009+ | 5.91 | Roger Clemens | 189.3 | BOS |
| +012+ | 5.79 | Mike Morgan | 167 | LAN |
| +019+ | 4.43 | Randy Tomlin | 118.7 | PIT |
| +020+ | 4.39 | Tim Belcher | 154 | LAN |
| +023+ | 4.32 | Ramon Martinez | 169.3 | LAN |
| +031+ | 4.07 | Jose DeLeon | 142 | SLN |
| +038+ | 3.87 | Jose Rijo | 134.7 | CIN |
| +040+ | 3.74 | Scott Erickson | 152.7 | MIN |
| +042+ | 3.7 | Kevin Tapani | 179.7 | MIN |
| +043+ | 3.7 | Greg Swindell | 181.3 | CLE |
| +046+ | 3.54 | Tommy Greene | 150 | PHI |
| +050+ | 3.41 | Greg Harris | 71.7 | SDN |
| +053+ | 3.29 | Jim Abbott | 170.3 | ANA |
| +052+ | 3.29 | Jimmy Key | 155.3 | TOR |
| +056+ | 3.12 | Bob Tewksbury | 136.3 | SLN |
| +057+ | 3.1 | Bill Krueger | 125 | SEA |
| +065+ | 2.78 | Mark Langston | 183 | ANA |
| +079+ | 2.52 | Frank Viola | 175 | NYN |
| +081+ | 2.51 | Doug Drabek | 161.7 | PIT |
| +082+ | 2.48 | Bruce Hurst | 176.3 | SDN |
| +086+ | 2.35 | Bret Saberhagen | 138.3 | KCA |
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