| Team | Tm | Tier | Game |
|---|---|---|---|
| Minnesota Twins | MIN | 2.56 | 198809170_CHA_MIN |
| San Diego Padres | SDN | 2.48 | 198809171_SDN_ATL |
| New York Mets | NYN | 2.04 | 198809180_WAS_NYN |
| Milwaukee Brewers | MIL | 1.2 | 198809180_MIL_SEA |
| Detroit Tigers | DET | 0.82 | 198809180_BAL_DET |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Baltimore Orioles | BAL | -5.84 | 198809180_BAL_DET |
| Seattle Mariners | SEA | -2.99 | 198809170_MIL_SEA |
| New York Yankees | NYA | -2.6 | 198809170_NYA_BOS |
| Toronto Blue Jays | TOR | -1.12 | 198809180_CLE_TOR |
| Chicago White Sox | CHA | -1.1 | 198809170_CHA_MIN |
Based on accumulated WAA for this season up to 1988-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 7.61 | Frank Viola | 232.3 | MIN |
| +043+ | 3.86 | John Franco | 79 | CIN |
| +046+ | 3.71 | Mike Henneman | 84.7 | DET |
| +054+ | 3.45 | Randy Myers | 64 | NYN |
| +056+ | 3.4 | Alejandro Pena | 85.7 | LAN |
| +057+ | 3.37 | Greg Harris | 101 | PHI |
| +060+ | 3.29 | Mark Davis | 93 | SDN |
| +064+ | 3.24 | Lance McCullers | 90 | SDN |
| +071+ | 2.92 | Bryan Harvey | 76.3 | ANA |
| +072+ | 2.85 | Doug Jones | 79.7 | CLE |
| +078+ | 2.73 | Steve Farr | 81 | KCA |
| +085+ | 2.59 | Juan Agosto | 86 | HOU |
| +096+ | 2.39 | Paul Mirabella | 53.7 | MIL |
| +099+ | 2.35 | Terry Leach | 90 | NYN |
| +100+ | 2.3 | Roger McDowell | 84.7 | NYN |
| +105+ | 2.24 | Rob Dibble | 55.3 | CIN |
| +104+ | 2.24 | Greg Cadaret | 68 | OAK |
| +106+ | 2.23 | Jay Howell | 62.3 | LAN |
| +110+ | 2.21 | Michael Jackson | 94 | SEA |
| +112+ | 2.11 | Chuck Crim | 96 | MIL |
| +113+ | 2.09 | D Eckersley | 68.7 | OAK |
| +122+ | 1.94 | Jeff Parrett | 82.3 | WAS |
| +123+ | 1.88 | Frank Williams | 63.3 | CIN |
| +127+ | 1.82 | John Costello | 45.7 | SLN |
| +129+ | 1.81 | Jeff Reardon | 67.7 | MIN |
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