| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 8.43 | 199005110_BAL_OAK |
| New York Mets | NYN | 3.11 | 199005110_LAN_NYN |
| Houston Astros | HOU | 2.2 | 199005120_HOU_PIT |
| Cincinnati Reds | CIN | 1.41 | 199005120_CHN_CIN |
| Toronto Blue Jays | TOR | 0.63 | 199005110_TOR_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Francisco Giants | SFN | -4.34 | 199005110_SFN_PHI |
| California Angels | ANA | -2.81 | 199005110_BOS_ANA |
| Atlanta Braves | ATL | -1.67 | 199005110_ATL_SLN |
| Chicago Cubs | CHN | -1.27 | 199005130_CHN_CIN |
| Los Angeles Dodgers | LAN | -0.76 | 199005110_LAN_NYN |
Based on accumulated WAA for this season up to 1990-05-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 2.57 | Dave Stewart | 49.3 | OAK |
| +018+ | 1.75 | Rob Dibble | 19.7 | CIN |
| +022+ | 1.67 | Juan Agosto | 21.3 | HOU |
| +024+ | 1.65 | Doug Jones | 18 | CLE |
| +030+ | 1.49 | Gregg Olson | 19.3 | BAL |
| +032+ | 1.46 | Duane Ward | 23 | TOR |
| +035+ | 1.38 | Bill Landrum | 17.7 | PIT |
| XXXXX | 1.18 | Greg Harris | 22.3 | SDN |
| XXXXX | 1.17 | Mark Eichhorn | 22.7 | ANA |
| XXXXX | 1.14 | Larry Andersen | 17.7 | HOU |
| XXXXX | 1.12 | Dennis Eckersley | 13 | OAK |
| XXXXX | 1.11 | Dan Schatzeder | 19.7 | HOU |
| XXXXX | 1.07 | Kevin Appier | 16.7 | KCA |
| XXXXX | 1.07 | Paul Assenmacher | 25.7 | CHN |
| XXXXX | 1.02 | Jeff Reardon | 11.3 | BOS |
| XXXXX | 1 | Jeff Brantley | 22.7 | SFN |
| XXXXX | 1 | Scott Radinsky | 11.3 | CHA |
| XXXXX | 1 | Bill Sampen | 16 | WAS |
| XXXXX | 0.99 | Danny Darwin | 16 | HOU |
| XXXXX | 0.98 | Jeff Montgomery | 27.3 | KCA |
| XXXXX | 0.96 | Ken Dayley | 10.7 | SLN |
| XXXXX | 0.96 | Bob Patterson | 15.3 | PIT |
| XXXXX | 0.96 | Mike Witt | 20.3 | ANA |
| XXXXX | 0.86 | Mike Henneman | 18.7 | DET |
| XXXXX | 0.82 | Barry Jones | 14 | CHA |
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