| Starter | Tm | Tier | Game |
|---|---|---|---|
| David Cone | NYN | 7.82 | 198809300_SLN_NYN |
| Frank Viola | MIN | 6.33 | 198809300_ANA_MIN |
| Ted Higuera | MIL | 5.61 | 198810010_MIL_OAK |
| Mark Gubicza | KCA | 5.51 | 198810010_CHA_KCA |
| John Tudor | LAN | 5.25 | 198809300_SFN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Campbell | SEA | -4.76 | 198810010_TEX_SEA |
| Rich Dotson | NYA | -4.15 | 198809290_NYA_BAL |
| Jay Tibbs | BAL | -3.01 | 198810010_BAL_TOR |
| Jim Clancy | TOR | -1.47 | 198810010_BAL_TOR |
| Charlie Lea | MIN | -1.31 | 198810010_ANA_MIN |
Based on accumulated WAA for this season up to 1988-10-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.83 | Orel Hershiser | 267 | LAN |
| +005+ | 8.1 | David Cone | 231.7 | NYN |
| +010+ | 6.77 | Teddy Higuera | 227.3 | MIL |
| +011+ | 6.74 | Mark Gubicza | 270 | KCA |
| +013+ | 6.42 | Allan Anderson | 203 | MIN |
| +016+ | 6.38 | Frank Viola | 250 | MIN |
| +019+ | 6.24 | John Tudor | 197.7 | TOT |
| +021+ | 6.01 | Joe Magrane | 165.7 | SLN |
| +022+ | 5.96 | Danny Jackson | 262.3 | CIN |
| +026+ | 5.29 | Roger Clemens | 264 | BOS |
| +027+ | 5.27 | Pascual Perez | 188.3 | WAS |
| +030+ | 5.15 | Dennis Martinez | 236.3 | WAS |
| +032+ | 5 | Bob Walk | 213.3 | PIT |
| +034+ | 4.89 | Jose Rijo | 162 | CIN |
| +038+ | 4.43 | Don Robinson | 168 | SFN |
| +046+ | 3.83 | Tim Leary | 223.3 | LAN |
| +049+ | 3.77 | Mike Scott | 218.3 | HOU |
| +050+ | 3.68 | Bobby Ojeda | 190.3 | NYN |
| +054+ | 3.59 | Dave Stieb | 207.3 | TOR |
| +057+ | 3.53 | Rick Reuschel | 245 | SFN |
| +062+ | 3.4 | Charlie Leibrandt | 244 | KCA |
| +064+ | 3.3 | Doug Drabek | 218 | PIT |
| +065+ | 3.3 | Jim Deshaies | 203 | HOU |
| +066+ | 3.24 | Greg Swindell | 241.3 | CLE |
| +067+ | 3.23 | Tim Belcher | 179.7 | LAN |
_