| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 4.24 | 198905210_SFN_NYN |
| Cincinnati Reds | CIN | 2.28 | 198905200_CHN_CIN |
| Oakland Athletics | OAK | 1.96 | 198905200_BOS_OAK |
| Houston Astros | HOU | 1.72 | 198905200_PIT_HOU |
| Montreal Expos | WAS | 1.65 | 198905200_LAN_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -5.31 | 198905220_BAL_CHA |
| Boston Red Sox | BOS | -2.32 | 198905200_BOS_OAK |
| Toronto Blue Jays | TOR | -2.27 | 198905200_TOR_CHA |
| Pittsburgh Pirates | PIT | -1.96 | 198905210_PIT_HOU |
| Minnesota Twins | MIN | -1.59 | 198905200_MIN_TEX |
Based on accumulated WAA for this season up to 1989-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 2.62 | Lee Guetterman | 29.7 | NYA |
| +036+ | 1.69 | Larry Andersen | 23 | HOU |
| +039+ | 1.6 | Randy Myers | 24 | NYN |
| +047+ | 1.51 | Jay Howell | 23 | LAN |
| +051+ | 1.48 | Craig Lefferts | 32.7 | SFN |
| +052+ | 1.47 | Rick Aguilera | 25 | NYN |
| +055+ | 1.46 | Danny Darwin | 38 | HOU |
| +057+ | 1.45 | Greg Minton | 27 | ANA |
| +060+ | 1.34 | Greg Harris | 20.7 | SDN |
| +063+ | 1.32 | Pat Perry | 22.7 | CHN |
| XXXXX | 1.24 | Norm Charlton | 19.7 | CIN |
| XXXXX | 1.24 | Todd Burns | 29 | OAK |
| XXXXX | 1.19 | Jose Alvarez | 28.3 | ATL |
| XXXXX | 1.05 | Cecilio Guante | 24.7 | TEX |
| XXXXX | 0.97 | Frank DiPino | 24 | SLN |
| XXXXX | 0.95 | Dennis Eckersley | 18.3 | OAK |
| XXXXX | 0.92 | Don Aase | 16 | NYN |
| XXXXX | 0.92 | Kenny Rogers | 20.7 | TEX |
| XXXXX | 0.9 | Eric Plunk | 15.3 | OAK |
| XXXXX | 0.89 | Mark Davis | 27.7 | SDN |
| XXXXX | 0.88 | John Franco | 20.3 | CIN |
| XXXXX | 0.87 | Terry Leach | 15.3 | NYN |
| XXXXX | 0.85 | Rich Gossage | 12.7 | SFN |
| XXXXX | 0.8 | Jeff Pico | 26.3 | CHN |
| XXXXX | 0.8 | Jeff Russell | 21.7 | TEX |
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