| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stieb | TOR | 7.05 | 198409250_TOR_BOS |
| Mike Boddicker | BAL | 4.77 | 198409241_NYA_BAL |
| Orel Hershiser | LAN | 4.24 | 198409250_HOU_LAN |
| Bert Blyleven | CLE | 3.33 | 198409260_SEA_CLE |
| Joe Niekro | HOU | 3.18 | 198409250_HOU_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Neal Heaton | CLE | -6.33 | 198409250_SEA_CLE |
| Jim Clancy | TOR | -5.17 | 198409240_TOR_BOS |
| Mark Davis | SFN | -4.65 | 198409242_SDN_SFN |
| Floyd Bannister | CHA | -2.47 | 198409240_MIN_CHA |
| Dick Ruthven | CHN | -1.75 | 198409260_CHN_PIT |
Based on accumulated WAA for this season up to 1984-09-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 6.35 | Mike Boddicker | 254.3 | BAL |
| +010+ | 6.26 | Dwight Gooden | 218.3 | NYN |
| +012+ | 6.18 | Alejandro Pena | 201 | LAN |
| +015+ | 5.93 | Dave Stieb | 258.3 | TOR |
| +019+ | 5.49 | Bert Blyleven | 236.7 | CLE |
| +022+ | 5.08 | Rick Rhoden | 230.7 | PIT |
| +025+ | 4.94 | Charlie Lea | 224.3 | WAS |
| +026+ | 4.92 | Joe Niekro | 244.3 | HOU |
| +032+ | 4.57 | Orel Hershiser | 180.3 | LAN |
| +033+ | 4.55 | Fernando Valenzuela | 261 | LAN |
| +035+ | 4.5 | Frank Viola | 252 | MIN |
| +036+ | 4.35 | John Candelaria | 184 | PIT |
| +037+ | 4.33 | John Denny | 146.3 | PHI |
| +040+ | 4.26 | Ricky Mahler | 215 | ATL |
| +041+ | 4.21 | Larry McWilliams | 220.7 | PIT |
| +042+ | 4.12 | Buddy Black | 255.7 | KCA |
| +043+ | 4.09 | Ray Burris | 204.7 | OAK |
| +044+ | 4.05 | Rick Honeycutt | 184 | LAN |
| +050+ | 3.87 | Doyle Alexander | 254 | TOR |
| +054+ | 3.7 | Storm Davis | 224.7 | BAL |
| +059+ | 3.58 | Dan Schatzeder | 136.3 | WAS |
| +062+ | 3.47 | Phil Niekro | 215.3 | NYA |
| +065+ | 3.31 | Nolan Ryan | 183.7 | HOU |
| +070+ | 3.19 | Frank Tanana | 238.7 | TEX |
| +073+ | 3.14 | Bob Knepper | 229 | HOU |
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