| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 5.2 | 198908110_LAN_SFN |
| Houston Astros | HOU | 3.18 | 198908120_CIN_HOU |
| St. Louis Cardinals | SLN | 2.52 | 198908130_SLN_NYN |
| Oakland Athletics | OAK | 2.36 | 198908130_OAK_ANA |
| Pittsburgh Pirates | PIT | 1.96 | 198908110_PIT_WAS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Detroit Tigers | DET | -5.15 | 198908120_DET_TEX |
| Chicago White Sox | CHA | -2.57 | 198908110_CHA_SEA |
| Minnesota Twins | MIN | -1.88 | 198908130_NYA_MIN |
| Milwaukee Brewers | MIL | -1.48 | 198908130_MIL_CLE |
| Montreal Expos | WAS | -0.98 | 198908120_PIT_WAS |
Based on accumulated WAA for this season up to 1989-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 4.49 | Jay Howell | 65 | LAN |
| +030+ | 3.73 | Jeff Montgomery | 72 | KCA |
| +034+ | 3.66 | Bill Landrum | 58 | PIT |
| +039+ | 3.52 | Mike Morgan | 135 | LAN |
| +045+ | 3.42 | Larry Andersen | 72.3 | HOU |
| +047+ | 3.37 | Mitch Williams | 65.7 | CHN |
| +051+ | 3.14 | Randy Myers | 65.3 | NYN |
| +053+ | 3.07 | Jeff Parrett | 80.3 | PHI |
| +058+ | 2.92 | Todd Burns | 77 | OAK |
| +065+ | 2.77 | Danny Darwin | 94.3 | HOU |
| +068+ | 2.7 | Rob Murphy | 77.3 | BOS |
| +070+ | 2.61 | Craig Lefferts | 83.7 | SFN |
| +074+ | 2.5 | Les Lancaster | 31.3 | CHN |
| +076+ | 2.43 | Rob Dibble | 71.7 | CIN |
| +079+ | 2.3 | Dennis Eckersley | 33.7 | OAK |
| +082+ | 2.24 | Mike Schooler | 59.3 | SEA |
| +088+ | 2.21 | Mark Davis | 62 | SDN |
| +092+ | 2.11 | Don Robinson | 165.3 | SFN |
| +094+ | 2.1 | Roger McDowell | 65 | TOT |
| +097+ | 2.09 | Jim Acker | 92.7 | ATL |
| +098+ | 2.07 | Rick Honeycutt | 60 | OAK |
| +104+ | 2.01 | Gregg Olson | 64 | BAL |
| +105+ | 1.97 | Greg Harris | 86 | SDN |
| +114+ | 1.87 | Dan Quisenberry | 60.3 | SLN |
| +115+ | 1.86 | Jeff Russell | 49.7 | TEX |
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