| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 11.22 | 198907090_LAN_CHN |
| St. Louis Cardinals | SLN | 3.46 | 198907080_SFN_SLN |
| Houston Astros | HOU | 3.25 | 198907080_WAS_HOU |
| New York Mets | NYN | 2.34 | 198907080_CIN_NYN |
| New York Yankees | NYA | 1.8 | 198907130_KCA_NYA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Boston Red Sox | BOS | -6.62 | 198907090_NYA_BOS |
| Chicago White Sox | CHA | -4.92 | 198907090_CHA_KCA |
| Detroit Tigers | DET | -1.77 | 198907090_TOR_DET |
| Minnesota Twins | MIN | -1.44 | 198907130_BOS_MIN |
| Seattle Mariners | SEA | -1.24 | 198907080_CLE_SEA |
Based on accumulated WAA for this season up to 1989-07-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +015+ | 3.82 | Orel Hershiser | 143.3 | LAN |
| +018+ | 3.67 | Larry Andersen | 54.3 | HOU |
| +027+ | 3.15 | Jay Howell | 47.7 | LAN |
| +028+ | 3.1 | Bill Landrum | 39.3 | PIT |
| +036+ | 2.88 | Rick Aguilera | 55.7 | NYN |
| +042+ | 2.62 | Jeff Montgomery | 55 | KCA |
| +047+ | 2.52 | Danny Darwin | 73.3 | HOU |
| +060+ | 2.33 | Lee Guetterman | 57 | NYA |
| +066+ | 2.21 | Doug Jones | 42.3 | CLE |
| +070+ | 2.13 | Greg Harris | 49.3 | SDN |
| +073+ | 2.11 | Todd Burns | 63.3 | OAK |
| +075+ | 2.07 | Mike Schooler | 45.7 | SEA |
| +076+ | 2.05 | Greg Minton | 45.7 | ANA |
| +077+ | 2.04 | Gregg Olson | 47.7 | BAL |
| +080+ | 2 | Craig Lefferts | 60.3 | SFN |
| +081+ | 1.99 | John Franco | 42.3 | CIN |
| +086+ | 1.86 | Eric Plunk | 40.7 | TOT |
| +092+ | 1.76 | Mitch Williams | 47.3 | CHN |
| +093+ | 1.75 | Rob Murphy | 55 | BOS |
| +096+ | 1.68 | Mark Grant | 56.3 | SDN |
| +095+ | 1.68 | Rob Dibble | 60.7 | CIN |
| +097+ | 1.67 | Jim Acker | 66 | ATL |
| +101+ | 1.58 | Frank DiPino | 50.7 | SLN |
| +107+ | 1.53 | Clay Parker | 48 | NYA |
| +110+ | 1.52 | Roger McDowell | 49.3 | TOT |
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