| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 17.93 | 198806130_NYA_BOS |
| John Tudor | SLN | 5.31 | 198806120_CHN_SLN |
| Mike Scott | HOU | 4.93 | 198806120_ATL_HOU |
| Doyle Alexander | DET | 1.58 | 198806140_BAL_DET |
| David Cone | NYN | 1.5 | 198806130_SLN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ed Whitson | SDN | -3.8 | 198806120_LAN_SDN |
| Mike Smithson | BOS | -3.6 | 198806140_NYA_BOS |
| Mike Moore | SEA | -3.13 | 198806140_SEA_MIL |
| Rich Yett | CLE | -2.88 | 198806130_CLE_TOR |
| Neal Heaton | WAS | -1.76 | 198806130_WAS_PHI |
Based on accumulated WAA for this season up to 1988-06-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 4.32 | Roger Clemens | 125.3 | BOS |
| +005+ | 3.91 | John Tudor | 68.3 | SLN |
| +006+ | 3.69 | Teddy Higuera | 89.3 | MIL |
| +007+ | 3.68 | David Cone | 79.7 | NYN |
| +008+ | 3.53 | Larry McWilliams | 76.3 | SLN |
| +010+ | 3.48 | Greg Maddux | 112.7 | CHN |
| +011+ | 3.38 | Bob Knepper | 75.3 | HOU |
| +012+ | 3.34 | Greg Swindell | 105.3 | CLE |
| +014+ | 3.21 | Dennis Martinez | 99.7 | WAS |
| +017+ | 2.93 | Ron Darling | 97.3 | NYN |
| +018+ | 2.91 | Orel Hershiser | 95.3 | LAN |
| +022+ | 2.8 | Bob Walk | 86.7 | PIT |
| +025+ | 2.69 | Frank Viola | 102.3 | MIN |
| +029+ | 2.4 | Jose Rijo | 62 | CIN |
| +031+ | 2.37 | Kevin Gross | 104.7 | PHI |
| +032+ | 2.32 | Rick Reuschel | 86.7 | SFN |
| +035+ | 2.3 | Pascual Perez | 53 | WAS |
| +037+ | 2.24 | Dave Stieb | 86 | TOR |
| +038+ | 2.18 | John Candelaria | 80.7 | NYA |
| +043+ | 2.09 | Dave LaPoint | 95 | CHA |
| +046+ | 2.04 | Tom Candiotti | 109.7 | CLE |
| +047+ | 1.99 | Mark Gubicza | 101.7 | KCA |
| +052+ | 1.91 | Jeff Russell | 54 | TEX |
| +058+ | 1.81 | Tim Leary | 78 | LAN |
| +060+ | 1.79 | Mike Scott | 100.7 | HOU |
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