| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | 8.08 | 198809050_SEA_MIN |
| David Cone | NYN | 6.58 | 198809050_NYN_PIT |
| Danny Jackson | CIN | 5.04 | 198809040_CIN_CHN |
| Ted Higuera | MIL | 4.71 | 198809040_MIL_DET |
| John Tudor | LAN | 4.06 | 198809030_LAN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -8.88 | 198809050_ANA_KCA |
| Mike Smithson | BOS | -3.83 | 198809050_BOS_BAL |
| Rich Dotson | NYA | -2.48 | 198809040_NYA_OAK |
| Jim Clancy | TOR | -1.82 | 198809030_TEX_TOR |
| Jack Armstrong | CIN | -1.55 | 198809030_CIN_CHN |
Based on accumulated WAA for this season up to 1988-09-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.19 | Frank Viola | 223.3 | MIN |
| +005+ | 6.73 | Teddy Higuera | 197 | MIL |
| +007+ | 6.52 | Danny Jackson | 225.7 | CIN |
| +008+ | 6.4 | David Cone | 191 | NYN |
| +009+ | 6.11 | Dennis Martinez | 212 | WAS |
| +013+ | 5.89 | Mark Gubicza | 219 | KCA |
| +016+ | 5.29 | John Tudor | 173.3 | TOT |
| +019+ | 5.14 | Orel Hershiser | 221 | LAN |
| +020+ | 5.02 | Mike Scott | 185.7 | HOU |
| +021+ | 4.98 | Joe Magrane | 133.3 | SLN |
| +023+ | 4.92 | Tim Leary | 194.3 | LAN |
| +028+ | 4.76 | Pascual Perez | 154.3 | WAS |
| +032+ | 4.54 | Roger Clemens | 226.7 | BOS |
| +033+ | 4.5 | Bob Walk | 185.3 | PIT |
| +037+ | 4.21 | Allan Anderson | 164.7 | MIN |
| +042+ | 3.73 | Don Robinson | 131.7 | SFN |
| +043+ | 3.51 | Jose Rijo | 142.3 | CIN |
| +044+ | 3.48 | Jeff Robinson | 172 | DET |
| +047+ | 3.32 | Dwight Gooden | 213.3 | NYN |
| +051+ | 3.22 | Rick Reuschel | 198 | SFN |
| +054+ | 3.07 | Dave LaPoint | 189.7 | TOT |
| +063+ | 2.92 | Bobby Ojeda | 168 | NYN |
| +064+ | 2.9 | Jim Deshaies | 171 | HOU |
| +068+ | 2.86 | Doug Drabek | 183.3 | PIT |
| +070+ | 2.82 | Ron Darling | 198 | NYN |
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