| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stieb | TOR | 8.86 | 198409100_NYA_TOR |
| Mike Boddicker | BAL | 4.57 | 198409090_MIL_BAL |
| John Candelaria | PIT | 4.09 | 198409100_WAS_PIT |
| Orel Hershiser | LAN | 3.27 | 198409090_CIN_LAN |
| Rick Mahler | ATL | 2.59 | 198409110_ATL_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stewart | TEX | -4.75 | 198409110_TEX_SEA |
| Steve Comer | CLE | -2.73 | 198409090_OAK_CLE |
| Jim Clancy | TOR | -2.71 | 198409090_DET_TOR |
| Mike Brown | BOS | -2.13 | 198409100_MIL_BOS |
| Bruce Berenyi | NYN | -1.2 | 198409110_SLN_NYN |
Based on accumulated WAA for this season up to 1984-09-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.91 | Dave Stieb | 237.3 | TOR |
| +012+ | 6.1 | Mike Boddicker | 229.3 | BAL |
| +016+ | 5.28 | Larry McWilliams | 202 | PIT |
| +019+ | 5.08 | Charlie Lea | 220.3 | WAS |
| +020+ | 4.97 | John Denny | 125.7 | PHI |
| +023+ | 4.88 | Joe Niekro | 217.7 | HOU |
| +025+ | 4.8 | Rick Rhoden | 215.7 | PIT |
| +028+ | 4.65 | Orel Hershiser | 160.7 | LAN |
| +031+ | 4.42 | John Candelaria | 175.3 | PIT |
| +033+ | 4.33 | Dwight Gooden | 193 | NYN |
| +035+ | 4.24 | Ray Burris | 188.3 | OAK |
| +037+ | 4.12 | Storm Davis | 202.3 | BAL |
| +038+ | 4.08 | Fernando Valenzuela | 238 | LAN |
| +039+ | 4.02 | Phil Niekro | 204 | NYA |
| +040+ | 4 | Dan Schatzeder | 123 | WAS |
| +043+ | 3.86 | Joaquin Andujar | 233 | SLN |
| +046+ | 3.8 | Frank Viola | 225.7 | MIN |
| +048+ | 3.78 | Ricky Mahler | 191.3 | ATL |
| +049+ | 3.77 | Jerry Koosman | 202.7 | PHI |
| +050+ | 3.76 | Bert Blyleven | 201.7 | CLE |
| +051+ | 3.7 | Rick Honeycutt | 181 | LAN |
| +059+ | 3.42 | Bob Knepper | 210.7 | HOU |
| +062+ | 3.31 | Frank Tanana | 217.3 | TEX |
| +065+ | 3.24 | John Butcher | 196 | MIN |
| +066+ | 3.23 | Bryn Smith | 164 | WAS |
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