| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ted Higuera | MIL | 6.91 | 198806150_SEA_MIL |
| Mike Scott | HOU | 6.3 | 198806160_HOU_CIN |
| Orel Hershiser | LAN | 5.15 | 198806150_LAN_ATL |
| Ron Darling | NYN | 3.96 | 198806150_SLN_NYN |
| Rick Reuschel | SFN | 2.98 | 198806150_SFN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -3.6 | 198806140_NYA_BOS |
| Mike Moore | SEA | -3.13 | 198806140_SEA_MIL |
| Pete Smith | ATL | -1.38 | 198806140_LAN_ATL |
| Dan Petry | ANA | -1.36 | 198806150_TEX_ANA |
| Mario Soto | CIN | -1.15 | 198806160_HOU_CIN |
Based on accumulated WAA for this season up to 1988-06-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.36 | Roger Clemens | 125.3 | BOS |
| +004+ | 4.21 | Teddy Higuera | 97.3 | MIL |
| +006+ | 3.93 | John Tudor | 68.3 | SLN |
| +007+ | 3.7 | David Cone | 79.7 | NYN |
| +008+ | 3.56 | Larry McWilliams | 76.3 | SLN |
| +009+ | 3.5 | Greg Maddux | 112.7 | CHN |
| +012+ | 3.41 | Bob Knepper | 75.3 | HOU |
| +013+ | 3.24 | Dennis Martinez | 99.7 | WAS |
| +018+ | 2.93 | Orel Hershiser | 102.3 | LAN |
| +022+ | 2.83 | Bob Walk | 86.7 | PIT |
| +023+ | 2.73 | Ron Darling | 104.3 | NYN |
| +025+ | 2.71 | Frank Viola | 102.3 | MIN |
| +026+ | 2.67 | Dave Stieb | 93 | TOR |
| +029+ | 2.53 | Greg Swindell | 107.7 | CLE |
| +030+ | 2.51 | Mark Gubicza | 109.7 | KCA |
| +033+ | 2.47 | Rick Reuschel | 93 | SFN |
| +036+ | 2.42 | Jose Rijo | 62 | CIN |
| +037+ | 2.39 | Kevin Gross | 104.7 | PHI |
| +039+ | 2.32 | Pascual Perez | 53 | WAS |
| +040+ | 2.21 | John Candelaria | 80.7 | NYA |
| +042+ | 2.19 | Jeff Russell | 64 | TEX |
| +045+ | 2.12 | Dave LaPoint | 95 | CHA |
| +047+ | 2.09 | Chris Bosio | 106.3 | MIL |
| +048+ | 2.08 | Tom Candiotti | 109.7 | CLE |
| +059+ | 1.87 | Mike Scott | 108.3 | HOU |
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