| Team | Tm | Tier | Game |
|---|---|---|---|
| New York Mets | NYN | 7.27 | 198905300_NYN_SFN |
| Cincinnati Reds | CIN | 2.35 | 198905290_CIN_PIT |
| Houston Astros | HOU | 1.8 | 198905310_HOU_SLN |
| Montreal Expos | WAS | 1.44 | 198905290_WAS_LAN |
| San Francisco Giants | SFN | 1.08 | 198905300_NYN_SFN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Chicago White Sox | CHA | -9.66 | 198905310_DET_CHA |
| Seattle Mariners | SEA | -2.45 | 198905300_SEA_NYA |
| Philadelphia Phillies | PHI | -1.33 | 198905310_PHI_SDN |
| Minnesota Twins | MIN | -1.32 | 198905290_MIN_KCA |
| Pittsburgh Pirates | PIT | -0.68 | 198905310_CIN_PIT |
Based on accumulated WAA for this season up to 1989-05-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +028+ | 2.11 | Lee Guetterman | 36.3 | NYA |
| +029+ | 2.08 | Larry Andersen | 28 | HOU |
| +032+ | 2 | Rick Aguilera | 31.3 | NYN |
| +033+ | 1.99 | Craig Lefferts | 39 | SFN |
| +043+ | 1.84 | Greg Minton | 31.7 | ANA |
| +047+ | 1.75 | Randy Myers | 28.3 | NYN |
| +048+ | 1.73 | Jay Howell | 28.3 | LAN |
| +063+ | 1.43 | John Franco | 27 | CIN |
| +070+ | 1.37 | Danny Darwin | 45 | HOU |
| +071+ | 1.36 | Pat Perry | 23.3 | CHN |
| XXXXX | 1.25 | Greg Harris | 24.7 | SDN |
| XXXXX | 1.24 | Jeff Montgomery | 29.7 | KCA |
| XXXXX | 1.21 | Randy Kramer | 27 | PIT |
| XXXXX | 1.2 | Jose Alvarez | 32 | ATL |
| XXXXX | 1.13 | Mike Schooler | 25 | SEA |
| XXXXX | 1.13 | Mark Davis | 30.7 | SDN |
| XXXXX | 1.11 | Jeff Russell | 25.3 | TEX |
| XXXXX | 1.1 | Frank DiPino | 28.7 | SLN |
| XXXXX | 1.08 | Kenny Rogers | 25 | TEX |
| XXXXX | 1.05 | Paul Assenmacher | 22.7 | ATL |
| XXXXX | 1.02 | Mike LaCoss | 35 | SFN |
| XXXXX | 1.01 | Gregg Olson | 32 | BAL |
| XXXXX | 0.97 | Dennis Eckersley | 18.7 | OAK |
| XXXXX | 0.96 | Dan Schatzeder | 22 | HOU |
| XXXXX | 0.96 | Jesse Orosco | 16 | CLE |
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