| Team | Tm | Tier | Game |
|---|---|---|---|
| Kansas City Royals | KCA | 2.94 | 199104140_NYA_KCA |
| Oakland Athletics | OAK | 2.91 | 199104160_OAK_ANA |
| Pittsburgh Pirates | PIT | 2.8 | 199104150_NYN_PIT |
| New York Yankees | NYA | 1.05 | 199104150_CHA_NYA |
| Montreal Expos | WAS | 0.71 | 199104150_SLN_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | -7.59 | 199104150_HOU_ATL |
| Seattle Mariners | SEA | -2.84 | 199104140_SEA_OAK |
| Boston Red Sox | BOS | -2.26 | 199104160_KCA_BOS |
| California Angels | ANA | -2.13 | 199104140_ANA_MIN |
| Detroit Tigers | DET | -0.91 | 199104150_TOR_DET |
Based on accumulated WAA for this season up to 1991-04-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| XXXXX | 0.87 | Mike Bielecki | 10.3 | CHN |
| XXXXX | 0.62 | Mark Eichhorn | 7 | ANA |
| XXXXX | 0.57 | Mike Flanagan | 6.3 | BAL |
| XXXXX | 0.56 | Paul Gibson | 6.3 | DET |
| XXXXX | 0.55 | Jim Acker | 8.7 | TOR |
| XXXXX | 0.54 | Jim Gott | 6 | LAN |
| XXXXX | 0.52 | Dennis Eckersley | 6 | OAK |
| XXXXX | 0.52 | Russ Swan | 5.7 | SEA |
| XXXXX | 0.5 | Roger McDowell | 8.3 | PHI |
| XXXXX | 0.47 | Scott Terry | 5 | SLN |
| XXXXX | 0.46 | Tom Bolton | 5.3 | BOS |
| XXXXX | 0.46 | Doug Simons | 5.3 | NYN |
| XXXXX | 0.45 | Heathcliff Slocumb | 5.3 | CHN |
| XXXXX | 0.45 | Tom Gordon | 5 | KCA |
| XXXXX | 0.45 | Mike Hartley | 5 | LAN |
| XXXXX | 0.45 | Mike Henneman | 5 | DET |
| XXXXX | 0.43 | Mike Maddux | 5 | SDN |
| XXXXX | 0.4 | Curt Young | 4.7 | OAK |
| XXXXX | 0.39 | Jeff Russell | 4.3 | TEX |
| XXXXX | 0.38 | Randy Myers | 4.3 | CIN |
| XXXXX | 0.37 | Scott Ruskin | 4 | WAS |
| XXXXX | 0.37 | Paul Assenmacher | 4.3 | CHN |
| XXXXX | 0.35 | Cris Carpenter | 3.7 | SLN |
| XXXXX | 0.35 | Steve Frey | 6 | WAS |
| XXXXX | 0.35 | Doug Jones | 4 | CLE |
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