| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.62 | 198806240_BAL_BOS |
| John Tudor | SLN | 6.42 | 198806230_PHI_SLN |
| Orel Hershiser | LAN | 5.1 | 198806240_LAN_CIN |
| Dwight Gooden | NYN | 3.52 | 198806220_PIT_NYN |
| Frank Viola | MIN | 3.01 | 198806220_ANA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.18 | 198806220_SDN_SFN |
| Willie Fraser | ANA | -3.1 | 198806220_ANA_MIN |
| Mike Moore | SEA | -2.73 | 198806240_KCA_SEA |
| Brian Fisher | PIT | -2.14 | 198806230_PIT_WAS |
| Pete Smith | ATL | -2.04 | 198806240_SDN_ATL |
Based on accumulated WAA for this season up to 1988-06-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.08 | John Tudor | 83.3 | SLN |
| +003+ | 4.93 | Greg Maddux | 130.7 | CHN |
| +005+ | 4.41 | David Cone | 95.3 | NYN |
| +006+ | 4.31 | Roger Clemens | 136.7 | BOS |
| +010+ | 3.84 | Frank Viola | 117.7 | MIN |
| +011+ | 3.78 | Teddy Higuera | 102.3 | MIL |
| +012+ | 3.74 | Bob Knepper | 88.3 | HOU |
| +013+ | 3.5 | Bob Walk | 103.3 | PIT |
| +014+ | 3.47 | Ron Darling | 113.3 | NYN |
| +017+ | 3.33 | Orel Hershiser | 119 | LAN |
| +022+ | 3.04 | Pascual Perez | 61 | WAS |
| +024+ | 2.92 | Kevin Gross | 113.3 | PHI |
| +029+ | 2.81 | Larry McWilliams | 86.3 | SLN |
| +030+ | 2.79 | Dave LaPoint | 102 | CHA |
| +031+ | 2.78 | Dave Stieb | 98.7 | TOR |
| +033+ | 2.67 | Mark Gubicza | 115.7 | KCA |
| +039+ | 2.48 | Paul Kilgus | 104 | TEX |
| +041+ | 2.39 | Dennis Martinez | 111 | WAS |
| +043+ | 2.26 | Jeff Russell | 73 | TEX |
| +046+ | 2.13 | Jose Rijo | 68 | CIN |
| +050+ | 2.07 | John Candelaria | 93 | NYA |
| +054+ | 2.01 | Jim Deshaies | 85.3 | HOU |
| +055+ | 2.01 | Chris Bosio | 115.3 | MIL |
| +056+ | 1.99 | Rick Reuschel | 96.7 | SFN |
| +057+ | 1.98 | Mike Scott | 109 | HOU |
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