| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dennis Martinez | WAS | 5.67 | 198808290_LAN_WAS |
| David Cone | NYN | 5.34 | 198808290_SDN_NYN |
| Tim Leary | LAN | 5.22 | 198808270_LAN_PHI |
| Mike Scott | HOU | 4.58 | 198808270_PIT_HOU |
| Mark Gubicza | KCA | 4.32 | 198808270_MIN_KCA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bert Blyleven | MIN | -4.15 | 198808270_MIN_KCA |
| Tom Glavine | ATL | -3.8 | 198808270_CHN_ATL |
| Curt Young | OAK | -2.5 | 198808280_BAL_OAK |
| Jim Clancy | TOR | -2.39 | 198808290_TOR_MIL |
| Oswaldo Peraza | BAL | -1.2 | 198808270_BAL_OAK |
Based on accumulated WAA for this season up to 1988-08-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 6.85 | Frank Viola | 207.7 | MIN |
| +005+ | 6.46 | David Cone | 184 | NYN |
| +006+ | 6.18 | Dennis Martinez | 212 | WAS |
| +010+ | 5.93 | Teddy Higuera | 182.7 | MIL |
| +011+ | 5.86 | Danny Jackson | 208 | CIN |
| +013+ | 5.63 | Tim Leary | 188 | LAN |
| +014+ | 5.55 | Mark Gubicza | 210 | KCA |
| +017+ | 5.2 | John Tudor | 167.3 | TOT |
| +026+ | 4.74 | Mike Scott | 179.7 | HOU |
| +028+ | 4.67 | Roger Clemens | 213.7 | BOS |
| +030+ | 4.41 | Allan Anderson | 159.3 | MIN |
| +032+ | 4.22 | Pascual Perez | 147.3 | WAS |
| +033+ | 4.2 | Joe Magrane | 124.3 | SLN |
| +034+ | 4.08 | Bob Walk | 178 | PIT |
| +037+ | 4 | Orel Hershiser | 203 | LAN |
| +041+ | 3.54 | Jeff Robinson | 172 | DET |
| +042+ | 3.53 | Jose Rijo | 142.3 | CIN |
| +045+ | 3.42 | Greg Maddux | 211 | CHN |
| +050+ | 3.15 | Dave LaPoint | 182.7 | TOT |
| +051+ | 3.15 | Don Robinson | 119.7 | SFN |
| +052+ | 3.04 | Jim Deshaies | 165 | HOU |
| +053+ | 3.03 | Rick Reuschel | 183 | SFN |
| +059+ | 2.88 | Greg Harris | 87.3 | PHI |
| +060+ | 2.88 | Scott Bankhead | 130.7 | SEA |
| +061+ | 2.87 | Dwight Gooden | 205.3 | NYN |
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