| Starter | Tm | Tier | Game |
|---|---|---|---|
| Orel Hershiser | LAN | 8.32 | 198809280_LAN_SDN |
| Danny Jackson | CIN | 5.64 | 198809280_CIN_SFN |
| Mark Gubicza | KCA | 4.4 | 198809260_SEA_KCA |
| Allan Anderson | MIN | 3.96 | 198809270_OAK_MIN |
| Joe Magrane | SLN | 3.48 | 198809280_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bert Blyleven | MIN | -7.95 | 198809280_OAK_MIN |
| Willie Fraser | ANA | -6.84 | 198809270_ANA_MIL |
| Mike Smithson | BOS | -3.38 | 198809270_TOR_BOS |
| Bill Swift | SEA | -1.93 | 198809260_SEA_KCA |
| Tom Glavine | ATL | -1.77 | 198809280_HOU_ATL |
Based on accumulated WAA for this season up to 1988-09-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.8 | Orel Hershiser | 267 | LAN |
| +007+ | 7.72 | David Cone | 222.7 | NYN |
| +010+ | 6.79 | Teddy Higuera | 220.7 | MIL |
| +009+ | 6.79 | Frank Viola | 243 | MIN |
| +012+ | 6.69 | Mark Gubicza | 262.3 | KCA |
| +013+ | 6.51 | John Tudor | 196.3 | TOT |
| +014+ | 6.4 | Allan Anderson | 203 | MIN |
| +019+ | 5.98 | Joe Magrane | 165.7 | SLN |
| +020+ | 5.93 | Danny Jackson | 262.3 | CIN |
| +025+ | 5.37 | Roger Clemens | 256 | BOS |
| +029+ | 5.12 | Dennis Martinez | 236.3 | WAS |
| +031+ | 4.97 | Bob Walk | 213.3 | PIT |
| +033+ | 4.88 | Jose Rijo | 162 | CIN |
| +034+ | 4.86 | Pascual Perez | 181.3 | WAS |
| +038+ | 4.39 | Don Robinson | 168 | SFN |
| +046+ | 3.8 | Tim Leary | 223.3 | LAN |
| +049+ | 3.78 | Mike Scott | 211.3 | HOU |
| +055+ | 3.66 | Bobby Ojeda | 190.3 | NYN |
| +062+ | 3.28 | Doug Drabek | 218 | PIT |
| +061+ | 3.28 | Jim Deshaies | 203 | HOU |
| +063+ | 3.22 | Greg Swindell | 241.3 | CLE |
| +066+ | 3.2 | Rick Reuschel | 237 | SFN |
| +067+ | 3.17 | Ron Darling | 235.7 | NYN |
| +070+ | 3.1 | John Smiley | 201.3 | PIT |
| +071+ | 3.04 | Dwight Gooden | 248.7 | NYN |
_