| Team | Tm | Tier | Game |
|---|---|---|---|
| Toronto Blue Jays | TOR | 3.53 | 199105190_TOR_CHA |
| Montreal Expos | WAS | 2.8 | 199105190_WAS_SFN |
| Los Angeles Dodgers | LAN | 2.37 | 199105190_NYN_LAN |
| Pittsburgh Pirates | PIT | 1.87 | 199105210_SLN_PIT |
| New York Mets | NYN | 1.02 | 199105190_NYN_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | -6.07 | 199105190_HOU_SLN |
| Boston Red Sox | BOS | -3.28 | 199105200_MIL_BOS |
| San Diego Padres | SDN | -3.19 | 199105190_SDN_CIN |
| Baltimore Orioles | BAL | -2.89 | 199105210_BAL_DET |
| Oakland Athletics | OAK | -1.04 | 199105190_OAK_CLE |
Based on accumulated WAA for this season up to 1991-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +018+ | 1.96 | Roger McDowell | 30.3 | PHI |
| +021+ | 1.83 | Mark Eichhorn | 23 | ANA |
| +030+ | 1.48 | Russ Swan | 24 | SEA |
| +039+ | 1.42 | Bryan Harvey | 18.3 | ANA |
| +043+ | 1.36 | Bill Landrum | 20 | PIT |
| +046+ | 1.33 | Scott Terry | 22 | SLN |
| +047+ | 1.32 | Michael Jackson | 27 | SEA |
| +049+ | 1.28 | Donn Pall | 17.7 | CHA |
| XXXXX | 1.23 | Darren Holmes | 29.3 | MIL |
| XXXXX | 1.22 | Jeff Russell | 21 | TEX |
| XXXXX | 1.22 | Jeff Gray | 25.7 | BOS |
| XXXXX | 1.2 | Rob Dibble | 20.7 | CIN |
| XXXXX | 1.2 | Jeff Robinson | 23 | ANA |
| XXXXX | 1.19 | Mike Henneman | 25.3 | DET |
| XXXXX | 1.13 | Bill Swift | 20 | SEA |
| XXXXX | 1.12 | Juan Berenguer | 24.7 | ATL |
| XXXXX | 1.11 | Randy Tomlin | 29 | PIT |
| XXXXX | 1.11 | Duane Ward | 22 | TOR |
| XXXXX | 1.1 | Jim Acker | 29 | TOR |
| XXXXX | 1.08 | Paul Gibson | 31.3 | DET |
| XXXXX | 1.08 | Alejandro Pena | 14.7 | NYN |
| XXXXX | 1.07 | Kent Mercker | 19.3 | ATL |
| XXXXX | 1.05 | John Franco | 14.3 | NYN |
| XXXXX | 0.95 | Vicente Palacios | 41.3 | PIT |
| XXXXX | 0.93 | Jeff Reardon | 17.7 | BOS |
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