| Team | Tm | Tier | Game |
|---|---|---|---|
| Toronto Blue Jays | TOR | 1.94 | 198909010_MIN_TOR |
| Oakland Athletics | OAK | 1.61 | 198909010_OAK_MIL |
| St. Louis Cardinals | SLN | 1.5 | 198909010_HOU_SLN |
| Los Angeles Dodgers | LAN | 1.29 | 198908300_NYN_LAN |
| San Diego Padres | SDN | 1.02 | 198908310_PHI_SDN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Baltimore Orioles | BAL | -1.88 | 198909010_BAL_CHA |
| Atlanta Braves | ATL | -1.8 | 198909010_CHN_ATL |
| Chicago White Sox | CHA | -1.56 | 198909010_BAL_CHA |
| San Francisco Giants | SFN | -1.31 | 198908300_PHI_SFN |
| Minnesota Twins | MIN | -1.08 | 198909010_MIN_TOR |
Based on accumulated WAA for this season up to 1989-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +027+ | 4.35 | Jeff Montgomery | 82 | KCA |
| +031+ | 4.17 | Bill Landrum | 69.3 | PIT |
| +037+ | 3.81 | Jeff Parrett | 91.3 | PHI |
| +046+ | 3.48 | Mike Morgan | 145.7 | LAN |
| +050+ | 3.43 | Danny Darwin | 108 | HOU |
| +064+ | 3.07 | Randy Myers | 72 | NYN |
| +067+ | 2.95 | Rob Dibble | 83.3 | CIN |
| +068+ | 2.93 | Roger McDowell | 74.7 | TOT |
| +071+ | 2.89 | Dennis Eckersley | 43 | OAK |
| +073+ | 2.86 | Les Lancaster | 45.7 | CHN |
| +080+ | 2.67 | Mark Davis | 72.3 | SDN |
| +082+ | 2.66 | Lee Guetterman | 90.3 | NYA |
| +083+ | 2.64 | Jim Acker | 104 | TOT |
| +085+ | 2.58 | Gregg Olson | 70.7 | BAL |
| +086+ | 2.55 | Todd Burns | 82.7 | OAK |
| +088+ | 2.54 | Tom Henke | 70.7 | TOR |
| +098+ | 2.41 | Craig Lefferts | 93.7 | SFN |
| +100+ | 2.39 | Jesse Orosco | 63.3 | CLE |
| +101+ | 2.38 | Mitch Williams | 74.3 | CHN |
| +103+ | 2.36 | Mark Grant | 93 | SDN |
| +106+ | 2.3 | Tim Burke | 76.7 | WAS |
| +108+ | 2.28 | Mike Schooler | 64.7 | SEA |
| +111+ | 2.23 | Jeff Russell | 61.3 | TEX |
| +122+ | 1.99 | Alejandro Pena | 63.3 | LAN |
| +123+ | 1.97 | Dennis Lamp | 88.7 | BOS |
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