| Starter | Tm | Tier | Game |
|---|---|---|---|
| Orel Hershiser | LAN | 6.18 | 198809190_LAN_HOU |
| Danny Jackson | CIN | 4.81 | 198809190_SDN_CIN |
| Pascual Perez | WAS | 3.29 | 198809180_WAS_NYN |
| Joe Magrane | SLN | 3.13 | 198809170_SLN_CHN |
| Bob Walk | PIT | 3.12 | 198809180_PIT_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Dotson | NYA | -4.44 | 198809190_BAL_NYA |
| Mike Smithson | BOS | -3.24 | 198809180_NYA_BOS |
| Tom Glavine | ATL | -2.34 | 198809172_SDN_ATL |
| Mike Campbell | SEA | -2.18 | 198809180_MIL_SEA |
| Mark Williamson | BAL | -1.88 | 198809170_BAL_DET |
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 |
| +005+ | 7.46 | David Cone | 207 | NYN |
| +007+ | 7.34 | Orel Hershiser | 248 | LAN |
| +008+ | 7.13 | Teddy Higuera | 206 | MIL |
| +010+ | 6.65 | John Tudor | 192.3 | TOT |
| +011+ | 6.53 | Dennis Martinez | 228 | WAS |
| +015+ | 6.16 | Danny Jackson | 247.3 | CIN |
| +017+ | 6.04 | Mark Gubicza | 244.7 | KCA |
| +024+ | 5.14 | Allan Anderson | 185.7 | MIN |
| +027+ | 4.98 | Jose Rijo | 160.3 | CIN |
| +026+ | 4.98 | Joe Magrane | 148.7 | SLN |
| +034+ | 4.71 | Tim Leary | 212.7 | LAN |
| +035+ | 4.65 | Roger Clemens | 242 | BOS |
| +037+ | 4.58 | Bob Walk | 207.7 | PIT |
| +038+ | 4.53 | Don Robinson | 154.7 | SFN |
| +039+ | 4.46 | Pascual Perez | 176.3 | WAS |
| +042+ | 3.9 | Mike Scott | 203.3 | HOU |
| +044+ | 3.84 | Rick Reuschel | 222 | SFN |
| +045+ | 3.82 | Dwight Gooden | 235.3 | NYN |
| +047+ | 3.7 | Bobby Ojeda | 190.3 | NYN |
| +063+ | 3.25 | Jeff Robinson | 172 | DET |
| +069+ | 3.02 | Charlie Leibrandt | 222.3 | KCA |
| +073+ | 2.83 | Scott Terry | 111.3 | SLN |
| +076+ | 2.81 | Eric Show | 217.3 | SDN |
| +077+ | 2.76 | Doug Drabek | 203.7 | PIT |
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