| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 14.11 | 198807151_KCA_BOS |
| Frank Viola | MIN | 6.78 | 198807170_MIN_BAL |
| Orel Hershiser | LAN | 5.42 | 198807160_LAN_CHN |
| John Tudor | SLN | 4.97 | 198807150_SDN_SLN |
| Ted Higuera | MIL | 4.43 | 198807150_MIL_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -3.73 | 198807170_MIL_TEX |
| Willie Fraser | ANA | -3.44 | 198807160_DET_ANA |
| Mike Smithson | BOS | -3.4 | 198807152_KCA_BOS |
| Tom Glavine | ATL | -3.04 | 198807170_NYN_ATL |
| Ed Whitson | SDN | -2.78 | 198807160_SDN_SLN |
Based on accumulated WAA for this season up to 1988-07-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.2 | Roger Clemens | 168.7 | BOS |
| +002+ | 6.15 | Greg Maddux | 164.7 | CHN |
| +004+ | 5.35 | Frank Viola | 146 | MIN |
| +013+ | 4.47 | Pascual Perez | 91.3 | WAS |
| +017+ | 4.1 | Mark Gubicza | 145.3 | KCA |
| +020+ | 3.87 | Dennis Martinez | 140.7 | WAS |
| +021+ | 3.8 | Orel Hershiser | 147.3 | LAN |
| +023+ | 3.7 | John Tudor | 108.3 | SLN |
| +024+ | 3.62 | David Cone | 122.7 | NYN |
| +025+ | 3.55 | Teddy Higuera | 119 | MIL |
| +026+ | 3.53 | Bob Walk | 128 | PIT |
| +033+ | 2.82 | Jeff Robinson | 118.3 | DET |
| +034+ | 2.81 | Tim Leary | 116.7 | LAN |
| +036+ | 2.75 | Jose Rijo | 101.3 | CIN |
| +037+ | 2.73 | John Smiley | 119 | PIT |
| +038+ | 2.62 | Jimmy Key | 48.3 | TOR |
| +039+ | 2.59 | Andy Hawkins | 127.7 | SDN |
| +040+ | 2.56 | Kevin Gross | 141.3 | PHI |
| +041+ | 2.54 | Dwight Gooden | 148.7 | NYN |
| +044+ | 2.51 | Allan Anderson | 105 | MIN |
| +048+ | 2.43 | John Candelaria | 118.3 | NYA |
| +049+ | 2.39 | Bob Knepper | 116 | HOU |
| +050+ | 2.38 | Dave LaPoint | 132.7 | CHA |
| +052+ | 2.32 | Ron Darling | 139 | NYN |
| +054+ | 2.31 | Jim Deshaies | 112.7 | HOU |
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