| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 7.34 | 199005140_OAK_MIN |
| New York Mets | NYN | 4.01 | 199005160_NYN_SFN |
| Cincinnati Reds | CIN | 1.47 | 199005150_PIT_CIN |
| Houston Astros | HOU | 1.44 | 199005150_HOU_SLN |
| Cleveland Indians | CLE | 0.8 | 199005160_OAK_CLE |
| Team | Tm | Tier | Game |
|---|---|---|---|
| California Angels | ANA | -2.46 | 199005160_ANA_MIL |
| Chicago Cubs | CHN | -2.35 | 199005160_CHN_ATL |
| Atlanta Braves | ATL | -1.55 | 199005160_CHN_ATL |
| San Francisco Giants | SFN | -0.97 | 199005140_NYN_SFN |
| Los Angeles Dodgers | LAN | -0.75 | 199005160_WAS_LAN |
Based on accumulated WAA for this season up to 1990-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +015+ | 1.77 | Rob Dibble | 20 | CIN |
| +022+ | 1.68 | Juan Agosto | 21.3 | HOU |
| +031+ | 1.5 | Doug Jones | 21 | CLE |
| +030+ | 1.5 | Gregg Olson | 19.3 | BAL |
| +035+ | 1.42 | Paul Assenmacher | 29.3 | CHN |
| +039+ | 1.38 | Duane Ward | 27 | TOR |
| +040+ | 1.36 | Greg Harris | 24.3 | SDN |
| +042+ | 1.35 | Mark Eichhorn | 24.7 | ANA |
| +046+ | 1.3 | Dennis Eckersley | 15 | OAK |
| XXXXX | 1.25 | Bill Landrum | 18.7 | PIT |
| XXXXX | 1.2 | Dan Schatzeder | 20.7 | HOU |
| XXXXX | 1.19 | Jeff Brantley | 25 | SFN |
| XXXXX | 1.18 | Danny Darwin | 18 | HOU |
| XXXXX | 1.18 | Scott Radinsky | 13.3 | CHA |
| XXXXX | 1.06 | Kevin Appier | 16.7 | KCA |
| XXXXX | 1.05 | Jeff Montgomery | 28.3 | KCA |
| XXXXX | 1.01 | Bill Sampen | 16 | WAS |
| XXXXX | 1 | Larry Andersen | 18.3 | HOU |
| XXXXX | 0.97 | Mike Witt | 20.3 | ANA |
| XXXXX | 0.96 | Darrel Akerfelds | 10.7 | PHI |
| XXXXX | 0.96 | Ken Dayley | 10.7 | SLN |
| XXXXX | 0.93 | Mike Schooler | 17.3 | SEA |
| XXXXX | 0.9 | Gary Wayne | 10 | MIN |
| XXXXX | 0.9 | Gene Nelson | 17.7 | OAK |
| XXXXX | 0.89 | Atlee Hammaker | 38 | SFN |
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