| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | 1.78 | 199109050_SEA_BOS |
| Atlanta Braves | ATL | 1.67 | 199109030_ATL_WAS |
| Baltimore Orioles | BAL | 1.64 | 199109040_BAL_TOR |
| Chicago White Sox | CHA | 1.53 | 199109050_KCA_CHA |
| California Angels | ANA | 1.18 | 199109040_ANA_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -8.36 | 199109050_OAK_DET |
| New York Yankees | NYA | -2.35 | 199109030_NYA_TEX |
| Oakland Athletics | OAK | -1.47 | 199109050_OAK_DET |
| Texas Rangers | TEX | -1.46 | 199109040_NYA_TEX |
| Philadelphia Phillies | PHI | -1.23 | 199109040_CIN_PHI |
Based on accumulated WAA for this season up to 1991-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +032+ | 4.2 | Chuck McElroy | 83.7 | CHN |
| +047+ | 3.8 | Mark Eichhorn | 70.3 | ANA |
| +057+ | 3.51 | Bryan Harvey | 62.7 | ANA |
| +058+ | 3.46 | Mike Flanagan | 90.3 | BAL |
| +060+ | 3.43 | Todd Frohwirth | 74 | BAL |
| +062+ | 3.36 | Bill Swift | 75.3 | SEA |
| +069+ | 3.06 | John Habyan | 74 | NYA |
| +073+ | 2.98 | Mitch Williams | 72 | PHI |
| +076+ | 2.82 | Michael Jackson | 74 | SEA |
| +081+ | 2.69 | Scott Radinsky | 60 | CHA |
| +082+ | 2.68 | Carl Willis | 74.7 | MIN |
| +090+ | 2.57 | Rob Dibble | 73.3 | CIN |
| +093+ | 2.52 | Steve Howe | 47.7 | NYA |
| +094+ | 2.47 | Melido Perez | 118 | CHA |
| +100+ | 2.32 | Jeff Fassero | 46 | WAS |
| +099+ | 2.32 | Rick Aguilera | 59.3 | MIN |
| +101+ | 2.31 | Duane Ward | 94 | TOR |
| +106+ | 2.28 | Jeff Brantley | 77.3 | SFN |
| +107+ | 2.26 | Mike Maddux | 82 | SDN |
| +110+ | 2.21 | Lee Smith | 62.3 | SLN |
| +113+ | 2.18 | Al Osuna | 69.7 | HOU |
| +121+ | 2.05 | Jeff Innis | 69.7 | NYN |
| +126+ | 1.98 | Alejandro Pena | 66.7 | TOT |
| +129+ | 1.95 | Mike Timlin | 92.3 | TOR |
| +128+ | 1.95 | Scott Terry | 77.7 | SLN |
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