| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 8.43 | 199005110_BAL_OAK |
| New York Mets | NYN | 3.8 | 199005090_SFN_NYN |
| Houston Astros | HOU | 2.21 | 199005090_PHI_HOU |
| Cincinnati Reds | CIN | 1.47 | 199005090_CIN_PIT |
| Toronto Blue Jays | TOR | 0.89 | 199005100_TOR_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| San Francisco Giants | SFN | -4.91 | 199005090_SFN_NYN |
| California Angels | ANA | -3.24 | 199005100_ANA_SEA |
| Atlanta Braves | ATL | -1.8 | 199005090_ATL_CHN |
| Detroit Tigers | DET | -1.12 | 199005090_DET_MIL |
| Los Angeles Dodgers | LAN | -0.76 | 199005110_LAN_NYN |
Based on accumulated WAA for this season up to 1990-05-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.58 | Dave Stewart | 49.3 | OAK |
| +020+ | 1.61 | Juan Agosto | 20.7 | HOU |
| +022+ | 1.59 | Rob Dibble | 17.7 | CIN |
| +024+ | 1.57 | Doug Jones | 17 | CLE |
| +031+ | 1.48 | Duane Ward | 23 | TOR |
| +038+ | 1.25 | Jeff Montgomery | 25.7 | KCA |
| XXXXX | 1.24 | Bill Landrum | 16 | PIT |
| XXXXX | 1.24 | Gregg Olson | 16.3 | BAL |
| XXXXX | 1.2 | Greg Harris | 22.3 | SDN |
| XXXXX | 1.18 | Mark Eichhorn | 22.7 | ANA |
| XXXXX | 1.16 | Don Carman | 17.3 | PHI |
| XXXXX | 1.16 | Bill Sampen | 15.3 | WAS |
| XXXXX | 1.14 | Larry Andersen | 17.7 | HOU |
| XXXXX | 1.12 | Dennis Eckersley | 13 | OAK |
| XXXXX | 1.04 | Terry Leach | 18.3 | MIN |
| XXXXX | 1.03 | Jeff Reardon | 11.3 | BOS |
| XXXXX | 0.99 | Paul Assenmacher | 24.7 | CHN |
| XXXXX | 0.98 | Mike Witt | 20.3 | ANA |
| XXXXX | 0.96 | Dan Schatzeder | 18 | HOU |
| XXXXX | 0.96 | Danny Darwin | 15.7 | HOU |
| XXXXX | 0.94 | Bob Patterson | 15 | PIT |
| XXXXX | 0.92 | Scott Radinsky | 10.3 | CHA |
| XXXXX | 0.88 | Jeff Brantley | 21.3 | SFN |
| XXXXX | 0.87 | Kevin Appier | 12 | KCA |
| XXXXX | 0.87 | Mike Henneman | 18.7 | DET |
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