| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.46 | 199006200_OAK_DET |
| Kansas City Royals | KCA | 2.28 | 199006200_SEA_KCA |
| Cincinnati Reds | CIN | 1.83 | 199006210_CIN_ATL |
| Chicago White Sox | CHA | 1.44 | 199006220_CHA_OAK |
| Baltimore Orioles | BAL | 1.42 | 199006220_BAL_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -4.24 | 199006210_CIN_ATL |
| Chicago Cubs | CHN | -3.49 | 199006220_SLN_CHN |
| St. Louis Cardinals | SLN | -2.91 | 199006200_SLN_NYN |
| Philadelphia Phillies | PHI | -0.84 | 199006200_PIT_PHI |
| Montreal Expos | WAS | -0.76 | 199006200_CHN_WAS |
Based on accumulated WAA for this season up to 1990-06-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +010+ | 3.52 | Mark Eichhorn | 53 | ANA |
| +025+ | 2.84 | Gregg Olson | 38.3 | BAL |
| +026+ | 2.83 | Jeff Brantley | 55 | SFN |
| +032+ | 2.52 | Mark Williamson | 46.3 | BAL |
| +035+ | 2.41 | Dennis Eckersley | 31.3 | OAK |
| +037+ | 2.34 | Greg Harris | 51.3 | SDN |
| +038+ | 2.33 | Craig Lefferts | 39.7 | SDN |
| +042+ | 2.19 | Larry Andersen | 40.3 | HOU |
| +044+ | 2.18 | Bill Swift | 44.3 | SEA |
| +047+ | 2.09 | Doug Jones | 36.3 | CLE |
| +048+ | 2.08 | Edwin Nunez | 45.7 | DET |
| +052+ | 1.98 | Bill Landrum | 33 | PIT |
| +055+ | 1.95 | Bill Sampen | 40 | WAS |
| +058+ | 1.9 | Rob Dibble | 40 | CIN |
| +060+ | 1.88 | Bobby Thigpen | 34.7 | CHA |
| +064+ | 1.78 | Paul Gibson | 44.7 | DET |
| +069+ | 1.71 | Rick Aguilera | 32 | MIN |
| +070+ | 1.71 | Jeff Montgomery | 44 | KCA |
| +071+ | 1.7 | Tom Henke | 35.3 | TOR |
| +074+ | 1.66 | Barry Jones | 32.3 | CHA |
| +076+ | 1.65 | Lee Guetterman | 45.7 | NYA |
| +078+ | 1.59 | Danny Darwin | 43 | HOU |
| +081+ | 1.56 | Juan Agosto | 42.7 | HOU |
| +087+ | 1.47 | Mike Henneman | 41.3 | DET |
| +088+ | 1.46 | Steve Farr | 43.7 | KCA |
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