| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 13.52 | 198806180_BOS_BAL |
| Ted Higuera | MIL | 7.6 | 198806200_OAK_MIL |
| John Tudor | SLN | 5.83 | 198806180_SLN_PIT |
| Orel Hershiser | LAN | 4.67 | 198806191_SDN_LAN |
| Bob Walk | PIT | 2.42 | 198806190_SLN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -3.37 | 198806190_BOS_BAL |
| Mike Moore | SEA | -2.76 | 198806190_SEA_MIN |
| Pete Smith | ATL | -2.16 | 198806190_HOU_ATL |
| Brian Fisher | PIT | -1.55 | 198806180_SLN_PIT |
| Dan Petry | ANA | -1.25 | 198806200_ANA_MIN |
Based on accumulated WAA for this season up to 1988-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.17 | Roger Clemens | 134.3 | BOS |
| +004+ | 4.46 | David Cone | 88.7 | NYN |
| +005+ | 4.34 | Greg Maddux | 121.7 | CHN |
| +006+ | 4.29 | John Tudor | 74.3 | SLN |
| +009+ | 3.84 | Teddy Higuera | 102.3 | MIL |
| +010+ | 3.68 | Larry McWilliams | 84.3 | SLN |
| +012+ | 3.38 | Bob Knepper | 81.7 | HOU |
| +013+ | 3.31 | Orel Hershiser | 111.3 | LAN |
| +015+ | 3.21 | Bob Walk | 95.3 | PIT |
| +019+ | 3.06 | Frank Viola | 108.3 | MIN |
| +024+ | 2.92 | Kevin Gross | 113.3 | PHI |
| +027+ | 2.81 | Dave LaPoint | 102 | CHA |
| +026+ | 2.81 | Dave Stieb | 98.7 | TOR |
| +030+ | 2.69 | Ron Darling | 104.3 | NYN |
| +034+ | 2.55 | Mark Gubicza | 109.7 | KCA |
| +035+ | 2.53 | Rick Reuschel | 93 | SFN |
| +037+ | 2.36 | Pascual Perez | 53 | WAS |
| +039+ | 2.29 | Tom Candiotti | 118.7 | CLE |
| +038+ | 2.29 | Jeff Russell | 73 | TEX |
| +047+ | 2.15 | Dennis Martinez | 103 | WAS |
| +049+ | 2.12 | Jose Rijo | 68 | CIN |
| +052+ | 2.1 | Chris Bosio | 106.3 | MIL |
| +056+ | 2.02 | Jim Deshaies | 85.3 | HOU |
| +057+ | 1.94 | Mike Scott | 108.3 | HOU |
| +059+ | 1.89 | John Candelaria | 86 | NYA |
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