| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.52 | 198806180_BOS_BAL |
| Mike Scott | HOU | 6.3 | 198806160_HOU_CIN |
| John Tudor | SLN | 5.83 | 198806180_SLN_PIT |
| Dwight Gooden | NYN | 3.84 | 198806170_PHI_NYN |
| Frank Viola | MIN | 2.54 | 198806170_SEA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.37 | 198806171_SDN_LAN |
| Willie Fraser | ANA | -1.99 | 198806170_ANA_KCA |
| Oil Can Boyd | BOS | -1.58 | 198806170_BOS_BAL |
| Brian Fisher | PIT | -1.55 | 198806180_SLN_PIT |
| Jay Tibbs | BAL | -1.38 | 198806170_BOS_BAL |
Based on accumulated WAA for this season up to 1988-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.13 | Roger Clemens | 134.3 | BOS |
| +004+ | 4.29 | Greg Maddux | 121.7 | CHN |
| +005+ | 4.24 | John Tudor | 74.3 | SLN |
| +006+ | 4.2 | Teddy Higuera | 97.3 | MIL |
| +009+ | 3.63 | David Cone | 79.7 | NYN |
| +010+ | 3.57 | Larry McWilliams | 76.3 | SLN |
| +012+ | 3.35 | Bob Knepper | 81.7 | HOU |
| +013+ | 3.27 | Dennis Martinez | 99.7 | WAS |
| +017+ | 3.03 | Frank Viola | 108.3 | MIN |
| +022+ | 2.93 | Orel Hershiser | 102.3 | LAN |
| +024+ | 2.85 | Kevin Gross | 113.3 | PHI |
| +025+ | 2.83 | Bob Walk | 86.7 | PIT |
| +027+ | 2.69 | Dave Stieb | 93 | TOR |
| +028+ | 2.65 | Ron Darling | 104.3 | NYN |
| +031+ | 2.52 | Greg Swindell | 107.7 | CLE |
| +032+ | 2.51 | Mark Gubicza | 109.7 | KCA |
| +033+ | 2.49 | Rick Reuschel | 93 | SFN |
| +035+ | 2.42 | Jose Rijo | 62 | CIN |
| +038+ | 2.33 | Pascual Perez | 53 | WAS |
| +043+ | 2.15 | Dave LaPoint | 95 | CHA |
| +047+ | 2.12 | Jeff Russell | 64 | TEX |
| +049+ | 2.07 | Tom Candiotti | 109.7 | CLE |
| +048+ | 2.07 | Chris Bosio | 106.3 | MIL |
| +055+ | 1.9 | Mike Scott | 108.3 | HOU |
| +059+ | 1.85 | John Candelaria | 86 | NYA |
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