| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dennis Martinez | WAS | 5.52 | 198809060_WAS_SLN |
| Mark Gubicza | KCA | 4.9 | 198809060_ANA_KCA |
| John Tudor | LAN | 3.86 | 198809080_HOU_LAN |
| Mike Scott | HOU | 3.55 | 198809070_HOU_LAN |
| Joe Magrane | SLN | 3.36 | 198809070_PHI_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bert Blyleven | MIN | -4.88 | 198809060_SEA_MIN |
| Jay Tibbs | BAL | -2.9 | 198809060_BOS_BAL |
| Tom Glavine | ATL | -2.36 | 198809070_ATL_SFN |
| Ted Power | DET | -2.2 | 198809080_DET_NYA |
| Floyd Bannister | KCA | -1.83 | 198809070_ANA_KCA |
Based on accumulated WAA for this season up to 1988-09-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.1 | Frank Viola | 223.3 | MIN |
| +006+ | 6.66 | Teddy Higuera | 197 | MIL |
| +007+ | 6.55 | Dennis Martinez | 220 | WAS |
| +008+ | 6.47 | Danny Jackson | 225.7 | CIN |
| +010+ | 6.36 | David Cone | 191 | NYN |
| +011+ | 6.16 | Mark Gubicza | 227.7 | KCA |
| +015+ | 5.73 | John Tudor | 181.3 | TOT |
| +016+ | 5.71 | Joe Magrane | 142.3 | SLN |
| +019+ | 5.35 | Tim Leary | 202.3 | LAN |
| +022+ | 5.08 | Orel Hershiser | 221 | LAN |
| +028+ | 4.85 | Allan Anderson | 172.7 | MIN |
| +030+ | 4.82 | Mike Scott | 193.7 | HOU |
| +032+ | 4.5 | Pascual Perez | 161.3 | WAS |
| +033+ | 4.47 | Roger Clemens | 226.7 | BOS |
| +037+ | 4.21 | Bob Walk | 192.3 | PIT |
| +039+ | 4.05 | Don Robinson | 140.7 | SFN |
| +041+ | 3.99 | Jose Rijo | 148.3 | CIN |
| +045+ | 3.46 | Dwight Gooden | 220.3 | NYN |
| +046+ | 3.4 | Jeff Robinson | 172 | DET |
| +054+ | 3.16 | Greg Swindell | 210.3 | CLE |
| +055+ | 3.15 | Rick Reuschel | 198 | SFN |
| +060+ | 3 | Dave LaPoint | 189.7 | TOT |
| +068+ | 2.87 | Bobby Ojeda | 175 | NYN |
| +069+ | 2.84 | John Smiley | 176.7 | PIT |
| +074+ | 2.73 | Dave Stewart | 236.7 | OAK |
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