| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Stieb | TOR | 7.05 | 198409250_TOR_BOS |
| Orel Hershiser | LAN | 4.24 | 198409250_HOU_LAN |
| Bert Blyleven | CLE | 3.33 | 198409260_SEA_CLE |
| Joe Niekro | HOU | 3.18 | 198409250_HOU_LAN |
| Rick Mahler | ATL | 2.24 | 198409250_ATL_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Neal Heaton | CLE | -6.33 | 198409250_SEA_CLE |
| Matt Young | SEA | -4.18 | 198409270_CHA_SEA |
| Mike Krukow | SFN | -2.05 | 198409250_SDN_SFN |
| Dick Ruthven | CHN | -1.75 | 198409260_CHN_PIT |
| Tommy John | ANA | -1.58 | 198409270_ANA_TEX |
Based on accumulated WAA for this season up to 1984-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 6.35 | Mike Boddicker | 254.3 | BAL |
| +010+ | 6.24 | Dwight Gooden | 218.3 | NYN |
| +011+ | 6.17 | Alejandro Pena | 201 | LAN |
| +014+ | 5.92 | Dave Stieb | 258.3 | TOR |
| +020+ | 5.48 | Bert Blyleven | 236.7 | CLE |
| +022+ | 5.06 | Rick Rhoden | 230.7 | PIT |
| +025+ | 4.92 | Charlie Lea | 224.3 | WAS |
| +026+ | 4.91 | Joe Niekro | 244.3 | HOU |
| +032+ | 4.56 | Orel Hershiser | 180.3 | LAN |
| +033+ | 4.53 | Fernando Valenzuela | 261 | LAN |
| +034+ | 4.49 | Frank Viola | 252 | MIN |
| +036+ | 4.34 | John Candelaria | 184 | PIT |
| +037+ | 4.32 | John Denny | 146.3 | PHI |
| +040+ | 4.23 | Ricky Mahler | 215 | ATL |
| +041+ | 4.19 | Larry McWilliams | 220.7 | PIT |
| +042+ | 4.1 | Buddy Black | 255.7 | KCA |
| +044+ | 4.07 | Ray Burris | 204.7 | OAK |
| +045+ | 4.04 | Rick Honeycutt | 184 | LAN |
| +049+ | 3.85 | Doyle Alexander | 254 | TOR |
| +055+ | 3.7 | Storm Davis | 224.7 | BAL |
| +059+ | 3.57 | Dan Schatzeder | 136.3 | WAS |
| +065+ | 3.3 | Nolan Ryan | 183.7 | HOU |
| +072+ | 3.17 | Frank Tanana | 238.7 | TEX |
| +074+ | 3.12 | Bob Knepper | 229 | HOU |
| +081+ | 2.94 | Bryn Smith | 176.3 | WAS |
_