| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | 8.28 | 198809150_CHA_MIN |
| David Cone | NYN | 6.94 | 198809150_CHN_NYN |
| Mark Gubicza | KCA | 3.59 | 198809160_KCA_OAK |
| Roger Clemens | BOS | 3.55 | 198809150_NYA_BOS |
| Tim Leary | LAN | 3.49 | 198809170_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -7.11 | 198809160_TEX_ANA |
| Bert Blyleven | MIN | -6.22 | 198809160_CHA_MIN |
| Tom Glavine | ATL | -2.34 | 198809172_SDN_ATL |
| Mark Williamson | BAL | -1.88 | 198809170_BAL_DET |
| Doyle Alexander | DET | -1.36 | 198809170_BAL_DET |
Based on accumulated WAA for this season up to 1988-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 7.61 | Frank Viola | 232.3 | MIN |
| +005+ | 7.47 | David Cone | 207 | NYN |
| +006+ | 7.14 | Teddy Higuera | 206 | MIL |
| +010+ | 6.57 | Orel Hershiser | 239 | LAN |
| +011+ | 6.52 | Dennis Martinez | 228 | WAS |
| +013+ | 6.14 | John Tudor | 186.3 | TOT |
| +014+ | 6.06 | Mark Gubicza | 244.7 | KCA |
| +016+ | 5.96 | Danny Jackson | 240 | CIN |
| +022+ | 5.15 | Allan Anderson | 185.7 | MIN |
| +027+ | 4.99 | Pascual Perez | 170.3 | WAS |
| +028+ | 4.99 | Joe Magrane | 148.7 | SLN |
| +031+ | 4.85 | Mike Scott | 199.7 | HOU |
| +033+ | 4.81 | Bob Walk | 200.3 | PIT |
| +036+ | 4.72 | Tim Leary | 212.7 | LAN |
| +038+ | 4.65 | Roger Clemens | 242 | BOS |
| +039+ | 4.55 | Jose Rijo | 155.3 | CIN |
| +040+ | 4.15 | Don Robinson | 147.7 | SFN |
| +044+ | 3.85 | Rick Reuschel | 222 | SFN |
| +046+ | 3.77 | Dwight Gooden | 227.3 | NYN |
| +048+ | 3.71 | Bobby Ojeda | 190.3 | NYN |
| +058+ | 3.26 | Jeff Robinson | 172 | DET |
| +067+ | 3.04 | Charlie Leibrandt | 222.3 | KCA |
| +075+ | 2.83 | Scott Terry | 111.3 | SLN |
| +076+ | 2.81 | Eric Show | 217.3 | SDN |
| +077+ | 2.78 | Doug Drabek | 203.7 | PIT |
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