| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | 2.8 | 199108300_BOS_SEA |
| Baltimore Orioles | BAL | 2.76 | 199108300_BAL_MIN |
| Chicago White Sox | CHA | 2.72 | 199109010_CLE_CHA |
| Atlanta Braves | ATL | 1.45 | 199109010_ATL_PHI |
| Cincinnati Reds | CIN | 1.12 | 199108310_NYN_CIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -8.17 | 199109010_DET_OAK |
| Oakland Athletics | OAK | -2.71 | 199108300_DET_OAK |
| New York Yankees | NYA | -1.53 | 199108300_TOR_NYA |
| Texas Rangers | TEX | -1.52 | 199108300_KCA_TEX |
| Boston Red Sox | BOS | -1.48 | 199108300_BOS_SEA |
Based on accumulated WAA for this season up to 1991-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +030+ | 4.24 | Chuck McElroy | 82 | CHN |
| +045+ | 3.87 | Mark Eichhorn | 66.7 | ANA |
| +053+ | 3.49 | Todd Frohwirth | 70 | BAL |
| +054+ | 3.47 | Bryan Harvey | 60 | ANA |
| +055+ | 3.42 | Scott Terry | 75.3 | SLN |
| +056+ | 3.4 | Mike Flanagan | 87.3 | BAL |
| +061+ | 3.36 | Bill Swift | 73 | SEA |
| +069+ | 3.01 | Carl Willis | 73.7 | MIN |
| +071+ | 2.96 | John Habyan | 73 | NYA |
| +074+ | 2.89 | Mitch Williams | 71 | PHI |
| +076+ | 2.79 | Michael Jackson | 73.7 | SEA |
| +084+ | 2.64 | Jeff Brantley | 74.3 | SFN |
| +089+ | 2.45 | Scott Radinsky | 57.3 | CHA |
| +092+ | 2.44 | Melido Perez | 117.7 | CHA |
| +098+ | 2.33 | Lee Smith | 61.3 | SLN |
| +100+ | 2.29 | Rob Dibble | 70.3 | CIN |
| +103+ | 2.23 | Jeff Fassero | 45 | WAS |
| +107+ | 2.21 | Mike Stanton | 62.7 | ATL |
| +113+ | 2.13 | Rick Aguilera | 57.3 | MIN |
| +116+ | 2.08 | Mike Maddux | 80 | SDN |
| +117+ | 2.05 | Dennis Eckersley | 61 | OAK |
| +119+ | 2 | Al Osuna | 67.7 | HOU |
| +121+ | 1.97 | Duane Ward | 90 | TOR |
| +125+ | 1.88 | Mike Timlin | 91.3 | TOR |
| +128+ | 1.87 | Jeff Innis | 67.7 | NYN |
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