| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Boddicker | BAL | 4.77 | 198409241_NYA_BAL |
| Dwight Gooden | NYN | 4.58 | 198409230_WAS_NYN |
| Bert Blyleven | CLE | 3.24 | 198409220_CLE_MIN |
| John Denny | PHI | 3.18 | 198409240_PHI_NYN |
| Frank Viola | MIN | 2.98 | 198409240_MIN_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Young | SEA | -5.3 | 198409220_SEA_CHA |
| Jim Clancy | TOR | -5.17 | 198409240_TOR_BOS |
| Mark Davis | SFN | -4.65 | 198409242_SDN_SFN |
| Dave Stewart | TEX | -3.53 | 198409230_TEX_ANA |
| Chris Codiroli | OAK | -3.35 | 198409230_OAK_KCA |
Based on accumulated WAA for this season up to 1984-09-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 7.14 | Dave Stieb | 253.7 | TOR |
| +008+ | 6.31 | Mike Boddicker | 254.3 | BAL |
| +010+ | 6.22 | Dwight Gooden | 218.3 | NYN |
| +012+ | 6.15 | Alejandro Pena | 201 | LAN |
| +020+ | 5.44 | Orel Hershiser | 178.7 | LAN |
| +024+ | 5.03 | Rick Rhoden | 230.7 | PIT |
| +026+ | 4.91 | Charlie Lea | 224.3 | WAS |
| +027+ | 4.77 | Joe Niekro | 236 | HOU |
| +029+ | 4.66 | Bert Blyleven | 227.7 | CLE |
| +032+ | 4.43 | Frank Viola | 252 | MIN |
| +035+ | 4.34 | Fernando Valenzuela | 252 | LAN |
| +036+ | 4.32 | John Candelaria | 184 | PIT |
| +037+ | 4.29 | John Denny | 146.3 | PHI |
| +039+ | 4.16 | Larry McWilliams | 220.7 | PIT |
| +040+ | 4.06 | Ray Burris | 204.7 | OAK |
| +042+ | 3.9 | Ricky Mahler | 207 | ATL |
| +043+ | 3.86 | Doyle Alexander | 245 | TOR |
| +044+ | 3.85 | Rick Honeycutt | 182 | LAN |
| +049+ | 3.75 | Buddy Black | 246.7 | KCA |
| +055+ | 3.56 | Dan Schatzeder | 129.3 | WAS |
| +058+ | 3.49 | Storm Davis | 215.7 | BAL |
| +060+ | 3.47 | Mark Langston | 216.7 | SEA |
| +062+ | 3.44 | Dave Dravecky | 153.7 | SDN |
| +063+ | 3.43 | Phil Niekro | 215.3 | NYA |
| +064+ | 3.4 | John Butcher | 217 | MIN |
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