| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 6.36 | 198908210_LAN_WAS |
| Oakland Athletics | OAK | 2.69 | 198908200_MIN_OAK |
| St. Louis Cardinals | SLN | 2.31 | 198908200_SLN_CIN |
| California Angels | ANA | 1.24 | 198908220_ANA_KCA |
| Kansas City Royals | KCA | 0.76 | 198908210_ANA_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | -3.31 | 198908220_CHA_MIN |
| San Francisco Giants | SFN | -2.71 | 198908210_SFN_NYN |
| Detroit Tigers | DET | -2.52 | 198908210_OAK_DET |
| Chicago White Sox | CHA | -2.51 | 198908200_TEX_CHA |
| Chicago Cubs | CHN | -1.19 | 198908220_CIN_CHN |
Based on accumulated WAA for this season up to 1989-08-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +025+ | 4.46 | Jay Howell | 67 | LAN |
| +028+ | 4.2 | Jeff Montgomery | 77.7 | KCA |
| +036+ | 3.62 | Bill Landrum | 62.7 | PIT |
| +043+ | 3.43 | Larry Andersen | 78 | HOU |
| +045+ | 3.38 | Jeff Parrett | 86.7 | PHI |
| +050+ | 3.31 | Mike Morgan | 139.7 | LAN |
| +052+ | 3.25 | Randy Myers | 69.3 | NYN |
| +057+ | 3.15 | Danny Darwin | 102 | HOU |
| +066+ | 2.81 | Mitch Williams | 69.3 | CHN |
| +071+ | 2.79 | Rob Dibble | 76.3 | CIN |
| +070+ | 2.79 | Todd Burns | 78.3 | OAK |
| +077+ | 2.61 | Les Lancaster | 37.7 | CHN |
| +078+ | 2.57 | Dennis Eckersley | 37 | OAK |
| +079+ | 2.56 | Craig Lefferts | 88 | SFN |
| +086+ | 2.48 | Roger McDowell | 69.7 | TOT |
| +095+ | 2.29 | Mark Davis | 65.3 | SDN |
| +094+ | 2.29 | Mike Schooler | 62.7 | SEA |
| +098+ | 2.19 | Gregg Olson | 66.3 | BAL |
| +101+ | 2.14 | Jeff Russell | 53 | TEX |
| +104+ | 2.11 | Tom Henke | 65.7 | TOR |
| +105+ | 2.06 | Rob Murphy | 80 | BOS |
| +106+ | 2.04 | Jim Acker | 97 | ATL |
| +108+ | 2.02 | Ken Dayley | 59.7 | SLN |
| +111+ | 1.98 | Jesse Orosco | 56 | CLE |
| +117+ | 1.9 | Lee Guetterman | 79.3 | NYA |
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