| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | 8.34 | 198809200_MIN_OAK |
| David Cone | NYN | 7.73 | 198809200_PHI_NYN |
| Orel Hershiser | LAN | 6.18 | 198809190_LAN_HOU |
| Ted Higuera | MIL | 6.17 | 198809200_MIL_ANA |
| Dennis Martinez | WAS | 5.66 | 198809201_WAS_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -6.92 | 198809210_MIL_ANA |
| Bert Blyleven | MIN | -6.88 | 198809210_MIN_OAK |
| Rich Dotson | NYA | -4.44 | 198809190_BAL_NYA |
| Jack Morris | DET | -1.47 | 198809200_CLE_DET |
| Rich Yett | CLE | -1.4 | 198809190_CLE_DET |
Based on accumulated WAA for this season up to 1988-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 7.83 | David Cone | 216 | NYN |
| +006+ | 7.34 | Orel Hershiser | 248 | LAN |
| +008+ | 6.79 | Teddy Higuera | 214 | MIL |
| +009+ | 6.71 | Frank Viola | 236 | MIN |
| +011+ | 6.66 | John Tudor | 192.3 | TOT |
| +014+ | 6.19 | Dennis Martinez | 234 | WAS |
| +015+ | 6.18 | Danny Jackson | 247.3 | CIN |
| +018+ | 5.99 | Mark Gubicza | 253.3 | KCA |
| +026+ | 5.17 | Allan Anderson | 185.7 | MIN |
| +029+ | 4.99 | Jose Rijo | 160.3 | CIN |
| +028+ | 4.99 | Joe Magrane | 148.7 | SLN |
| +030+ | 4.88 | Roger Clemens | 249 | BOS |
| +035+ | 4.71 | Tim Leary | 212.7 | LAN |
| +036+ | 4.59 | Bob Walk | 207.7 | PIT |
| +037+ | 4.55 | Don Robinson | 154.7 | SFN |
| +039+ | 4.45 | Pascual Perez | 176.3 | WAS |
| +042+ | 3.91 | Mike Scott | 203.3 | HOU |
| +044+ | 3.84 | Dwight Gooden | 235.3 | NYN |
| +046+ | 3.72 | Bobby Ojeda | 190.3 | NYN |
| +058+ | 3.51 | Rick Reuschel | 230 | SFN |
| +063+ | 3.28 | Scott Terry | 119 | SLN |
| +064+ | 3.26 | Jeff Robinson | 172 | DET |
| +068+ | 3.01 | John Smiley | 194.3 | PIT |
| +069+ | 3.01 | Dave LaPoint | 210 | TOT |
| +075+ | 2.83 | Eric Show | 217.3 | SDN |
_