| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dwight Gooden | NYN | 4.58 | 198409230_WAS_NYN |
| Joe Niekro | HOU | 3.75 | 198409210_CIN_HOU |
| Bert Blyleven | CLE | 3.24 | 198409220_CLE_MIN |
| Storm Davis | BAL | 2.89 | 198409210_BOS_BAL |
| Rick Rhoden | PIT | 2.88 | 198409220_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Young | SEA | -5.3 | 198409220_SEA_CHA |
| Dave Stewart | TEX | -3.53 | 198409230_TEX_ANA |
| Chris Codiroli | OAK | -3.35 | 198409230_OAK_KCA |
| Jim Slaton | ANA | -2.94 | 198409230_TEX_ANA |
| Andy Hawkins | SDN | -1.58 | 198409230_ATL_SDN |
Based on accumulated WAA for this season up to 1984-09-23.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 7.12 | Dave Stieb | 253.7 | TOR |
| +009+ | 6.2 | Dwight Gooden | 218.3 | NYN |
| +011+ | 6.13 | Alejandro Pena | 201 | LAN |
| +017+ | 5.7 | Mike Boddicker | 245.3 | BAL |
| +019+ | 5.42 | Orel Hershiser | 178.7 | LAN |
| +023+ | 5.01 | Rick Rhoden | 230.7 | PIT |
| +024+ | 4.88 | Charlie Lea | 224.3 | WAS |
| +026+ | 4.73 | Joe Niekro | 236 | HOU |
| +027+ | 4.7 | John Denny | 139.3 | PHI |
| +029+ | 4.63 | Bert Blyleven | 227.7 | CLE |
| +033+ | 4.47 | Frank Viola | 243.3 | MIN |
| +036+ | 4.31 | Fernando Valenzuela | 252 | LAN |
| +037+ | 4.3 | John Candelaria | 184 | PIT |
| +038+ | 4.24 | Larry McWilliams | 214.7 | PIT |
| +040+ | 4.04 | Ray Burris | 204.7 | OAK |
| +041+ | 3.88 | Ricky Mahler | 207 | ATL |
| +045+ | 3.84 | Doyle Alexander | 245 | TOR |
| +046+ | 3.83 | Rick Honeycutt | 182 | LAN |
| +048+ | 3.72 | Buddy Black | 246.7 | KCA |
| +052+ | 3.55 | Dan Schatzeder | 129.3 | WAS |
| +055+ | 3.48 | Storm Davis | 215.7 | BAL |
| +056+ | 3.44 | Mark Langston | 216.7 | SEA |
| +065+ | 3.38 | John Butcher | 217 | MIN |
| +066+ | 3.38 | Phil Niekro | 215.3 | NYA |
| +073+ | 3.25 | Nolan Ryan | 183.7 | HOU |
_