| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.51 | 199005240_MIL_OAK |
| New York Yankees | NYA | 1.77 | 199005240_NYA_MIN |
| New York Mets | NYN | 1.53 | 199005220_NYN_LAN |
| Cincinnati Reds | CIN | 1.35 | 199005240_CIN_WAS |
| Kansas City Royals | KCA | 1.34 | 199005220_KCA_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -2.88 | 199005240_TOR_ANA |
| Atlanta Braves | ATL | -2.52 | 199005220_SLN_ATL |
| Chicago Cubs | CHN | -2.18 | 199005220_CIN_CHN |
| Montreal Expos | WAS | -0.9 | 199005220_SDN_WAS |
| Philadelphia Phillies | PHI | -0.9 | 199005220_PHI_SFN |
Based on accumulated WAA for this season up to 1990-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +012+ | 2.3 | Juan Agosto | 28.3 | HOU |
| +021+ | 1.89 | Gregg Olson | 23.3 | BAL |
| +024+ | 1.85 | Doug Jones | 24.7 | CLE |
| +023+ | 1.85 | Mark Eichhorn | 32.3 | ANA |
| +025+ | 1.84 | Tim Leary | 59.7 | NYA |
| +026+ | 1.84 | Jeff Brantley | 32.3 | SFN |
| +031+ | 1.64 | Paul Assenmacher | 34.7 | CHN |
| +033+ | 1.63 | Greg Harris | 29.3 | SDN |
| +039+ | 1.5 | Dennis Eckersley | 17 | OAK |
| +041+ | 1.49 | Bill Landrum | 23.3 | PIT |
| +045+ | 1.44 | Larry Andersen | 23.3 | HOU |
| +047+ | 1.43 | Jim Acker | 32 | TOR |
| +052+ | 1.42 | Rob Dibble | 23.3 | CIN |
| +055+ | 1.35 | Danny Darwin | 22.3 | HOU |
| +059+ | 1.27 | Lee Smith | 28 | TOT |
| XXXXX | 1.2 | Bill Sampen | 20.3 | WAS |
| XXXXX | 1.2 | Jeff Montgomery | 32 | KCA |
| XXXXX | 1.14 | Rick Honeycutt | 17.7 | OAK |
| XXXXX | 1.12 | Terry Leach | 26 | MIN |
| XXXXX | 1.1 | Mike Schooler | 21.3 | SEA |
| XXXXX | 1.07 | Wayne Edwards | 21.3 | CHA |
| XXXXX | 1.07 | Darrel Akerfelds | 14 | PHI |
| XXXXX | 1.07 | Dennis Lamp | 30.3 | BOS |
| XXXXX | 1.02 | Mark Williamson | 23 | BAL |
| XXXXX | 1.01 | Scott Radinsky | 18.3 | CHA |
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