| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | 8.08 | 198809050_SEA_MIN |
| David Cone | NYN | 6.58 | 198809050_NYN_PIT |
| Dennis Martinez | WAS | 5.52 | 198809060_WAS_SLN |
| Danny Jackson | CIN | 5.04 | 198809040_CIN_CHN |
| Mark Gubicza | KCA | 4.9 | 198809060_ANA_KCA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -8.88 | 198809050_ANA_KCA |
| Bert Blyleven | MIN | -4.88 | 198809060_SEA_MIN |
| Mike Smithson | BOS | -3.83 | 198809050_BOS_BAL |
| Jay Tibbs | BAL | -2.9 | 198809060_BOS_BAL |
| Rich Dotson | NYA | -2.48 | 198809040_NYA_OAK |
Based on accumulated WAA for this season up to 1988-09-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.16 | Frank Viola | 223.3 | MIN |
| +006+ | 6.69 | Teddy Higuera | 197 | MIL |
| +007+ | 6.57 | Dennis Martinez | 220 | WAS |
| +008+ | 6.49 | Danny Jackson | 225.7 | CIN |
| +009+ | 6.39 | David Cone | 191 | NYN |
| +011+ | 6.21 | Mark Gubicza | 227.7 | KCA |
| +016+ | 5.27 | John Tudor | 173.3 | TOT |
| +018+ | 5.12 | Orel Hershiser | 221 | LAN |
| +020+ | 4.99 | Mike Scott | 185.7 | HOU |
| +021+ | 4.96 | Joe Magrane | 133.3 | SLN |
| +024+ | 4.9 | Tim Leary | 194.3 | LAN |
| +028+ | 4.75 | Pascual Perez | 154.3 | WAS |
| +032+ | 4.5 | Roger Clemens | 226.7 | BOS |
| +033+ | 4.47 | Bob Walk | 185.3 | PIT |
| +037+ | 4.19 | Allan Anderson | 164.7 | MIN |
| +042+ | 3.71 | Don Robinson | 131.7 | SFN |
| +043+ | 3.49 | Jose Rijo | 142.3 | CIN |
| +044+ | 3.45 | Jeff Robinson | 172 | DET |
| +049+ | 3.3 | Dwight Gooden | 213.3 | NYN |
| +052+ | 3.2 | Greg Swindell | 210.3 | CLE |
| +053+ | 3.19 | Rick Reuschel | 198 | SFN |
| +059+ | 3.04 | Dave LaPoint | 189.7 | TOT |
| +066+ | 2.89 | Bobby Ojeda | 175 | NYN |
| +069+ | 2.87 | John Smiley | 176.7 | PIT |
| +071+ | 2.83 | Doug Drabek | 183.3 | PIT |
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