| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stieb | TOR | 8.86 | 198409100_NYA_TOR |
| John Candelaria | PIT | 4.09 | 198409100_WAS_PIT |
| Joe Niekro | HOU | 3.61 | 198409120_ATL_HOU |
| Dwight Gooden | NYN | 2.89 | 198409120_PIT_NYN |
| Phil Niekro | NYA | 2.79 | 198409120_NYA_TOR |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Young | SEA | -7.04 | 198409120_TEX_SEA |
| Dave Stewart | TEX | -4.75 | 198409110_TEX_SEA |
| Mike Brown | BOS | -2.13 | 198409100_MIL_BOS |
| Britt Burns | CHA | -1.47 | 198409120_CHA_OAK |
| Bruce Berenyi | NYN | -1.2 | 198409110_SLN_NYN |
Based on accumulated WAA for this season up to 1984-09-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 6.88 | Dave Stieb | 237.3 | TOR |
| +011+ | 6.07 | Mike Boddicker | 229.3 | BAL |
| +016+ | 5.27 | Larry McWilliams | 202 | PIT |
| +017+ | 5.17 | Joe Niekro | 223.7 | HOU |
| +019+ | 5.1 | Dwight Gooden | 202 | NYN |
| +020+ | 5.07 | Charlie Lea | 220.3 | WAS |
| +023+ | 4.96 | John Denny | 125.7 | PHI |
| +027+ | 4.79 | Rick Rhoden | 215.7 | PIT |
| +029+ | 4.63 | Orel Hershiser | 160.7 | LAN |
| +032+ | 4.41 | John Candelaria | 175.3 | PIT |
| +034+ | 4.31 | Bert Blyleven | 210.7 | CLE |
| +035+ | 4.23 | Phil Niekro | 211.3 | NYA |
| +037+ | 4.22 | Ray Burris | 188.3 | OAK |
| +038+ | 4.09 | Storm Davis | 202.3 | BAL |
| +039+ | 4.05 | Fernando Valenzuela | 238 | LAN |
| +041+ | 3.99 | Dan Schatzeder | 123 | WAS |
| +044+ | 3.87 | Joaquin Andujar | 233 | SLN |
| +047+ | 3.77 | Rick Honeycutt | 182 | LAN |
| +048+ | 3.77 | Frank Viola | 225.7 | MIN |
| +049+ | 3.76 | Ricky Mahler | 191.3 | ATL |
| +051+ | 3.75 | Jerry Koosman | 202.7 | PHI |
| +060+ | 3.39 | Bob Knepper | 210.7 | HOU |
| +061+ | 3.36 | John Butcher | 202.3 | MIN |
| +066+ | 3.28 | Frank Tanana | 217.3 | TEX |
| +071+ | 3.09 | Nolan Ryan | 181.3 | HOU |
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