| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | 1.98 | 199109070_SEA_BOS |
| Chicago White Sox | CHA | 1.96 | 199109070_CHA_TEX |
| Baltimore Orioles | BAL | 1.88 | 199109060_KCA_BAL |
| California Angels | ANA | 1.7 | 199109070_MIL_ANA |
| Atlanta Braves | ATL | 1.08 | 199109070_ATL_NYN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -8.36 | 199109050_OAK_DET |
| Texas Rangers | TEX | -2.51 | 199109070_CHA_TEX |
| Oakland Athletics | OAK | -1.98 | 199109070_OAK_DET |
| Philadelphia Phillies | PHI | -1.27 | 199109060_PHI_HOU |
| Boston Red Sox | BOS | -0.82 | 199109070_SEA_BOS |
Based on accumulated WAA for this season up to 1991-09-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +033+ | 4.18 | Chuck McElroy | 83.7 | CHN |
| +049+ | 3.81 | Mark Eichhorn | 70.7 | ANA |
| +054+ | 3.58 | Bryan Harvey | 63.7 | ANA |
| +057+ | 3.48 | Bill Swift | 76.7 | SEA |
| +058+ | 3.44 | Mike Flanagan | 90.3 | BAL |
| +059+ | 3.41 | Todd Frohwirth | 74 | BAL |
| +068+ | 2.98 | Mitch Williams | 72 | PHI |
| +070+ | 2.96 | John Habyan | 75.3 | NYA |
| +079+ | 2.75 | Carl Willis | 75.7 | MIN |
| +081+ | 2.68 | Scott Radinsky | 60 | CHA |
| +083+ | 2.66 | Michael Jackson | 74.7 | SEA |
| +091+ | 2.6 | Melido Perez | 122 | CHA |
| +093+ | 2.57 | Rob Dibble | 73.3 | CIN |
| +092+ | 2.57 | Steve Howe | 48.3 | NYA |
| +100+ | 2.42 | Rick Aguilera | 60.7 | MIN |
| +101+ | 2.42 | Mike Maddux | 84 | SDN |
| +106+ | 2.36 | Jeff Brantley | 78.3 | SFN |
| +109+ | 2.35 | Al Osuna | 71.7 | HOU |
| +108+ | 2.35 | Duane Ward | 94.7 | TOR |
| +116+ | 2.24 | Alejandro Pena | 69.7 | TOT |
| +119+ | 2.2 | Lee Smith | 62.3 | SLN |
| +121+ | 2.19 | Jeff Fassero | 47 | WAS |
| +120+ | 2.19 | Jeff Innis | 71.3 | NYN |
| +125+ | 2.13 | Kent Mercker | 55 | ATL |
| +130+ | 2 | Scott Terry | 78.3 | SLN |
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