| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.52 | 198806180_BOS_BAL |
| John Tudor | SLN | 5.83 | 198806180_SLN_PIT |
| Orel Hershiser | LAN | 4.67 | 198806191_SDN_LAN |
| Dwight Gooden | NYN | 3.84 | 198806170_PHI_NYN |
| Frank Viola | MIN | 2.54 | 198806170_SEA_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -3.37 | 198806190_BOS_BAL |
| Ed Whitson | SDN | -3.37 | 198806171_SDN_LAN |
| Mike Moore | SEA | -2.76 | 198806190_SEA_MIN |
| Pete Smith | ATL | -2.16 | 198806190_HOU_ATL |
| Willie Fraser | ANA | -1.99 | 198806170_ANA_KCA |
Based on accumulated WAA for this season up to 1988-06-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.18 | Roger Clemens | 134.3 | BOS |
| +004+ | 4.45 | David Cone | 88.7 | NYN |
| +005+ | 4.33 | Greg Maddux | 121.7 | CHN |
| +006+ | 4.27 | John Tudor | 74.3 | SLN |
| +007+ | 4.23 | Teddy Higuera | 97.3 | MIL |
| +010+ | 3.66 | Larry McWilliams | 84.3 | SLN |
| +012+ | 3.38 | Bob Knepper | 81.7 | HOU |
| +013+ | 3.31 | Orel Hershiser | 111.3 | LAN |
| +014+ | 3.21 | Bob Walk | 95.3 | PIT |
| +019+ | 3.06 | Frank Viola | 108.3 | MIN |
| +024+ | 2.91 | Kevin Gross | 113.3 | PHI |
| +025+ | 2.81 | Dave LaPoint | 102 | CHA |
| +028+ | 2.72 | Dave Stieb | 93 | TOR |
| +029+ | 2.69 | Ron Darling | 104.3 | NYN |
| +033+ | 2.56 | Greg Swindell | 107.7 | CLE |
| +034+ | 2.54 | Mark Gubicza | 109.7 | KCA |
| +035+ | 2.53 | Rick Reuschel | 93 | SFN |
| +036+ | 2.36 | Pascual Perez | 53 | WAS |
| +038+ | 2.29 | Tom Candiotti | 118.7 | CLE |
| +044+ | 2.15 | Dennis Martinez | 103 | WAS |
| +048+ | 2.12 | Jeff Russell | 64 | TEX |
| +047+ | 2.12 | Jose Rijo | 68 | CIN |
| +050+ | 2.11 | Chris Bosio | 106.3 | MIL |
| +055+ | 1.94 | Mike Scott | 108.3 | HOU |
| +056+ | 1.89 | John Candelaria | 86 | NYA |
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