| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ted Higuera | MIL | 5.64 | 198806100_MIL_CHA |
| Ron Darling | NYN | 4.75 | 198806100_NYN_WAS |
| Orel Hershiser | LAN | 4.48 | 198806090_HOU_LAN |
| Bob Welch | OAK | 2.88 | 198806100_OAK_TEX |
| Bob Knepper | HOU | 2.53 | 198806110_ATL_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dan Petry | ANA | -2.25 | 198806100_KCA_ANA |
| Dennis Rasmussen | SDN | -1.64 | 198806110_LAN_SDN |
| Jeff Sellers | BOS | -1.62 | 198806100_BOS_TOR |
| Tom Glavine | ATL | -1.47 | 198806100_ATL_HOU |
| Allan Anderson | MIN | -0.95 | 198806100_MIN_SEA |
Based on accumulated WAA for this season up to 1988-06-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.63 | Roger Clemens | 118.7 | BOS |
| +004+ | 3.73 | John Tudor | 61.3 | SLN |
| +006+ | 3.7 | Teddy Higuera | 89.3 | MIL |
| +007+ | 3.41 | Greg Maddux | 104.7 | CHN |
| +008+ | 3.36 | Bob Knepper | 75.3 | HOU |
| +009+ | 3.33 | Greg Swindell | 105.3 | CLE |
| +013+ | 3.06 | David Cone | 69.7 | NYN |
| +014+ | 3.01 | Ron Darling | 97.3 | NYN |
| +016+ | 2.98 | Larry McWilliams | 67.3 | SLN |
| +018+ | 2.9 | Orel Hershiser | 95.3 | LAN |
| +022+ | 2.71 | Frank Viola | 102.3 | MIN |
| +026+ | 2.54 | Kevin Gross | 97 | PHI |
| +028+ | 2.43 | Dennis Martinez | 90.7 | WAS |
| +032+ | 2.3 | Pascual Perez | 53 | WAS |
| +033+ | 2.29 | Rick Reuschel | 86.7 | SFN |
| +035+ | 2.25 | Dave Stieb | 86 | TOR |
| +036+ | 2.18 | Dave LaPoint | 89 | CHA |
| +037+ | 2.16 | John Candelaria | 80.7 | NYA |
| +046+ | 2.01 | Bob Walk | 77.7 | PIT |
| +045+ | 2.01 | Mark Gubicza | 101.7 | KCA |
| +047+ | 1.95 | Tom Candiotti | 101.7 | CLE |
| +048+ | 1.93 | Jose Rijo | 54 | CIN |
| +050+ | 1.91 | Jeff Russell | 54 | TEX |
| +055+ | 1.8 | Tim Leary | 78 | LAN |
| +059+ | 1.76 | Jim Deshaies | 71.3 | HOU |
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