| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 5.4 | 198907290_SFN_HOU |
| Los Angeles Dodgers | LAN | 5 | 198907290_LAN_SDN |
| St. Louis Cardinals | SLN | 2.71 | 198907290_SLN_WAS |
| Oakland Athletics | OAK | 2.04 | 198907290_SEA_OAK |
| Philadelphia Phillies | PHI | 1.64 | 198907290_PIT_PHI |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -4.17 | 198907310_ANA_SEA |
| Chicago White Sox | CHA | -3.27 | 198907300_CHA_ANA |
| Detroit Tigers | DET | -2.74 | 198907290_MIN_DET |
| Baltimore Orioles | BAL | -2.41 | 198907310_BAL_BOS |
| Atlanta Braves | ATL | -0.84 | 198907290_CIN_ATL |
Based on accumulated WAA for this season up to 1989-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +023+ | 3.73 | Larry Andersen | 61.7 | HOU |
| +024+ | 3.69 | Bill Landrum | 50.3 | PIT |
| +026+ | 3.61 | Jay Howell | 54.7 | LAN |
| +027+ | 3.55 | Jeff Montgomery | 67.7 | KCA |
| +036+ | 3.26 | Mike Morgan | 129.3 | LAN |
| +046+ | 2.98 | Danny Darwin | 87.7 | HOU |
| +048+ | 2.76 | Randy Myers | 58.3 | NYN |
| +054+ | 2.6 | Mitch Williams | 56.3 | CHN |
| +057+ | 2.51 | Craig Lefferts | 72.7 | SFN |
| +058+ | 2.49 | Todd Burns | 72 | OAK |
| +061+ | 2.46 | Rick Aguilera | 69.3 | NYN |
| +066+ | 2.41 | Jeff Parrett | 68 | PHI |
| +067+ | 2.39 | Roger McDowell | 58.7 | TOT |
| +071+ | 2.34 | Rob Murphy | 68.3 | BOS |
| +076+ | 2.22 | Mike Schooler | 51.7 | SEA |
| +083+ | 2.11 | Luis Aquino | 94.7 | KCA |
| +084+ | 2.06 | Les Lancaster | 23.7 | CHN |
| +089+ | 2.01 | Jim Acker | 79.7 | ATL |
| +092+ | 1.98 | Jeff Russell | 44 | TEX |
| +095+ | 1.97 | Todd Worrell | 37.3 | SLN |
| +098+ | 1.91 | Rob Dibble | 63.3 | CIN |
| +103+ | 1.88 | Donn Pall | 64 | CHA |
| +107+ | 1.85 | Mark Davis | 53 | SDN |
| +111+ | 1.8 | Eric Plunk | 53.7 | TOT |
| +115+ | 1.78 | Doug Jones | 51.3 | CLE |
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