| Starter | Tm | Tier | Game |
|---|---|---|---|
| Danny Jackson | CIN | 5.74 | 198808220_CIN_PIT |
| John Tudor | LAN | 5.63 | 198808220_NYN_LAN |
| Mike Scott | HOU | 5.18 | 198808220_HOU_CHN |
| David Cone | NYN | 4.69 | 198808230_NYN_LAN |
| Mark Gubicza | KCA | 3.61 | 198808210_KCA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Willie Fraser | ANA | -7.94 | 198808210_ANA_BAL |
| Bert Blyleven | MIN | -4.44 | 198808210_TEX_MIN |
| Tom Glavine | ATL | -3.95 | 198808220_ATL_SLN |
| Curt Young | OAK | -2.85 | 198808220_OAK_NYA |
| Jim Clancy | TOR | -2.62 | 198808230_CHA_TOR |
Based on accumulated WAA for this season up to 1988-08-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.02 | Frank Viola | 200 | MIN |
| +005+ | 6.22 | Danny Jackson | 201 | CIN |
| +007+ | 6.05 | Dennis Martinez | 195.3 | WAS |
| +011+ | 5.72 | David Cone | 175 | NYN |
| +012+ | 5.63 | Tim Leary | 182.7 | LAN |
| +013+ | 5.48 | Teddy Higuera | 173.7 | MIL |
| +016+ | 5 | Mark Gubicza | 201 | KCA |
| +021+ | 4.92 | Mike Scott | 178.7 | HOU |
| +024+ | 4.8 | Roger Clemens | 207.7 | BOS |
| +025+ | 4.79 | Allan Anderson | 154 | MIN |
| +028+ | 4.66 | John Tudor | 160.3 | TOT |
| +031+ | 4.15 | Pascual Perez | 141.3 | WAS |
| +033+ | 3.93 | Joe Magrane | 115.7 | SLN |
| +038+ | 3.68 | Orel Hershiser | 194 | LAN |
| +039+ | 3.64 | Jeff Robinson | 172 | DET |
| +040+ | 3.61 | Jose Rijo | 142.3 | CIN |
| +042+ | 3.58 | Bob Walk | 172 | PIT |
| +046+ | 3.43 | Scott Bankhead | 124.3 | SEA |
| +049+ | 3.03 | Dwight Gooden | 199.3 | NYN |
| +055+ | 2.85 | Rick Reuschel | 176 | SFN |
| +056+ | 2.83 | Dave LaPoint | 175.7 | TOT |
| +061+ | 2.75 | Don Robinson | 112.7 | SFN |
| +063+ | 2.7 | Doug Drabek | 176.3 | PIT |
| +067+ | 2.65 | Greg Maddux | 194.3 | CHN |
| +068+ | 2.63 | Eric Show | 179 | SDN |
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