| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.82 | 199005250_CLE_OAK |
| New York Yankees | NYA | 1.77 | 199005240_NYA_MIN |
| New York Mets | NYN | 1.72 | 199005250_SDN_NYN |
| Cincinnati Reds | CIN | 1.41 | 199005250_CIN_WAS |
| Kansas City Royals | KCA | 1.4 | 199005250_NYA_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -2.88 | 199005240_TOR_ANA |
| Atlanta Braves | ATL | -2.86 | 199005250_ATL_PHI |
| Chicago Cubs | CHN | -2.15 | 199005230_LAN_CHN |
| Philadelphia Phillies | PHI | -0.88 | 199005240_ATL_PHI |
| Montreal Expos | WAS | -0.88 | 199005240_CIN_WAS |
Based on accumulated WAA for this season up to 1990-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +012+ | 2.3 | Juan Agosto | 28.3 | HOU |
| +020+ | 1.97 | Mark Eichhorn | 34 | ANA |
| +021+ | 1.9 | Jeff Brantley | 33 | SFN |
| +022+ | 1.89 | Gregg Olson | 23.3 | BAL |
| +025+ | 1.85 | Doug Jones | 24.7 | CLE |
| +027+ | 1.84 | Tim Leary | 59.7 | NYA |
| +026+ | 1.84 | Greg Harris | 31.7 | SDN |
| +038+ | 1.64 | Paul Assenmacher | 34.7 | CHN |
| +043+ | 1.53 | Jim Acker | 33.3 | TOR |
| +046+ | 1.49 | Bill Landrum | 23.3 | PIT |
| +049+ | 1.44 | Larry Andersen | 23.3 | HOU |
| +051+ | 1.42 | Rob Dibble | 23.3 | CIN |
| +052+ | 1.41 | Dennis Eckersley | 18.3 | OAK |
| +056+ | 1.35 | Danny Darwin | 22.3 | HOU |
| +064+ | 1.28 | Jeff Montgomery | 33 | KCA |
| +066+ | 1.27 | Lee Smith | 28 | TOT |
| XXXXX | 1.2 | Bill Sampen | 20.3 | WAS |
| XXXXX | 1.2 | Rick Honeycutt | 18.3 | OAK |
| XXXXX | 1.19 | Darrel Akerfelds | 15.3 | PHI |
| XXXXX | 1.14 | Wally Whitehurst | 19.7 | NYN |
| XXXXX | 1.12 | Terry Leach | 26 | MIN |
| XXXXX | 1.09 | Mike Schooler | 21.3 | SEA |
| XXXXX | 1.07 | Wayne Edwards | 21.3 | CHA |
| XXXXX | 1.02 | Mark Williamson | 23 | BAL |
| XXXXX | 1.01 | Barry Jones | 20.7 | CHA |
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