| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 15.62 | 198806240_BAL_BOS |
| Ted Higuera | MIL | 6.94 | 198806260_MIL_ANA |
| Orel Hershiser | LAN | 5.1 | 198806240_LAN_CIN |
| Ron Darling | NYN | 4.89 | 198806260_NYN_CHN |
| Frank Viola | MIN | 4.55 | 198806262_MIN_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Smithson | BOS | -4.41 | 198806260_BAL_BOS |
| Willie Fraser | ANA | -3.38 | 198806260_MIL_ANA |
| Mike Moore | SEA | -2.73 | 198806240_KCA_SEA |
| Tom Glavine | ATL | -2.36 | 198806250_SDN_ATL |
| Charlie Lea | MIN | -0.74 | 198806261_MIN_OAK |
Based on accumulated WAA for this season up to 1988-06-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 5.06 | John Tudor | 83.3 | SLN |
| +004+ | 4.91 | Greg Maddux | 130.7 | CHN |
| +005+ | 4.41 | David Cone | 95.3 | NYN |
| +006+ | 4.39 | Frank Viola | 124 | MIN |
| +007+ | 4.28 | Roger Clemens | 136.7 | BOS |
| +011+ | 3.73 | Bob Knepper | 88.3 | HOU |
| +012+ | 3.72 | Pascual Perez | 69 | WAS |
| +014+ | 3.54 | Teddy Higuera | 106.7 | MIL |
| +015+ | 3.46 | Bob Walk | 103.3 | PIT |
| +016+ | 3.41 | Ron Darling | 119.7 | NYN |
| +019+ | 3.31 | Orel Hershiser | 119 | LAN |
| +032+ | 2.67 | Kevin Gross | 120.3 | PHI |
| +031+ | 2.67 | Dave LaPoint | 110.3 | CHA |
| +033+ | 2.66 | Mark Gubicza | 115.7 | KCA |
| +035+ | 2.58 | Jim Deshaies | 92 | HOU |
| +038+ | 2.46 | Paul Kilgus | 104 | TEX |
| +039+ | 2.46 | Larry McWilliams | 87.3 | SLN |
| +042+ | 2.36 | Dennis Martinez | 111 | WAS |
| +044+ | 2.23 | John Smiley | 103.7 | PIT |
| +048+ | 2.05 | John Candelaria | 93 | NYA |
| +050+ | 2.01 | Chris Bosio | 115.3 | MIL |
| +051+ | 1.99 | Rick Reuschel | 96.7 | SFN |
| +052+ | 1.98 | Dave Stieb | 101.7 | TOR |
| +054+ | 1.96 | Mike Scott | 109 | HOU |
| +056+ | 1.92 | John Farrell | 112.7 | CLE |
_