| Team | Tm | Tier | Game |
|---|---|---|---|
| Toronto Blue Jays | TOR | 3.33 | 199105300_OAK_TOR |
| Montreal Expos | WAS | 1.73 | 199105290_WAS_PHI |
| New York Yankees | NYA | 1.72 | 199105310_MIL_NYA |
| Pittsburgh Pirates | PIT | 1.16 | 199105310_PIT_PHI |
| Cincinnati Reds | CIN | 0.73 | 199105310_CIN_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Diego Padres | SDN | -4.4 | 199105290_ATL_SDN |
| Houston Astros | HOU | -3.44 | 199105290_HOU_LAN |
| Detroit Tigers | DET | -2.87 | 199105290_DET_MIL |
| Boston Red Sox | BOS | -1.86 | 199105310_BAL_BOS |
| Texas Rangers | TEX | -1.75 | 199105310_SEA_TEX |
Based on accumulated WAA for this season up to 1991-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +018+ | 2.31 | Mark Eichhorn | 27.7 | ANA |
| +033+ | 1.83 | Roger McDowell | 32.7 | PHI |
| +036+ | 1.82 | Gerald Alexander | 32.3 | TEX |
| +038+ | 1.77 | Mike Henneman | 33.7 | DET |
| +044+ | 1.66 | Scott Terry | 29.7 | SLN |
| +047+ | 1.59 | Rob Dibble | 24.3 | CIN |
| +054+ | 1.53 | Paul Gibson | 40.3 | DET |
| +055+ | 1.5 | Michael Jackson | 30.7 | SEA |
| +056+ | 1.49 | Chuck McElroy | 23.7 | CHN |
| +061+ | 1.42 | Bill Landrum | 25 | PIT |
| +062+ | 1.42 | John Franco | 18 | NYN |
| +065+ | 1.35 | Darren Holmes | 35 | MIL |
| +067+ | 1.33 | Kent Mercker | 22 | ATL |
| +070+ | 1.31 | Bryan Harvey | 21.3 | ANA |
| +074+ | 1.29 | Jeff Robinson | 25.7 | ANA |
| +077+ | 1.27 | Donn Pall | 19.3 | CHA |
| XXXXX | 1.18 | Neal Heaton | 20 | PIT |
| XXXXX | 1.17 | Jim Clancy | 26.7 | HOU |
| XXXXX | 1.17 | Pat Rice | 13 | SEA |
| XXXXX | 1.15 | John Habyan | 26.7 | NYA |
| XXXXX | 1.13 | Rick Aguilera | 24 | MIN |
| XXXXX | 1.12 | Lee Guetterman | 19.3 | NYA |
| XXXXX | 1.09 | Juan Berenguer | 31 | ATL |
| XXXXX | 1.09 | Rich Rodriguez | 31 | SDN |
| XXXXX | 1.06 | Shawn Hillegas | 21 | CLE |
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