| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Boddicker | BAL | 5.58 | 198409290_BAL_BOS |
| Dave Stieb | TOR | 5.08 | 198409290_TOR_MIL |
| Bert Blyleven | CLE | 4.42 | 198409300_MIN_CLE |
| Rick Rhoden | PIT | 3.84 | 198409290_PIT_PHI |
| Joe Niekro | HOU | 3.53 | 198409290_HOU_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Neal Heaton | CLE | -7.59 | 198409290_MIN_CLE |
| Jim Clancy | TOR | -5.93 | 198409280_TOR_MIL |
| Mark Davis | SFN | -5.37 | 198409300_SFN_LAN |
| Mike Moore | SEA | -4.76 | 198409280_CHA_SEA |
| Floyd Bannister | CHA | -3.85 | 198409290_CHA_SEA |
Based on accumulated WAA for this season up to 1984-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 6.49 | Mike Boddicker | 263 | BAL |
| +010+ | 6.25 | Dwight Gooden | 218.3 | NYN |
| +012+ | 6.13 | Alejandro Pena | 201 | LAN |
| +015+ | 5.85 | Dave Stieb | 267.3 | TOR |
| +016+ | 5.84 | Rick Rhoden | 239.7 | PIT |
| +022+ | 5.3 | Bert Blyleven | 244.3 | CLE |
| +026+ | 4.93 | Orel Hershiser | 189.7 | LAN |
| +027+ | 4.9 | Charlie Lea | 224.3 | WAS |
| +028+ | 4.81 | John Denny | 154.3 | PHI |
| +031+ | 4.62 | Joe Niekro | 248.3 | HOU |
| +035+ | 4.48 | Fernando Valenzuela | 261 | LAN |
| +036+ | 4.42 | John Candelaria | 185 | PIT |
| +039+ | 4.34 | Larry McWilliams | 227.3 | PIT |
| +043+ | 4.11 | Buddy Black | 255.7 | KCA |
| +044+ | 4.01 | Rick Honeycutt | 184 | LAN |
| +045+ | 3.91 | Doyle Alexander | 262 | TOR |
| +050+ | 3.75 | Frank Viola | 257.7 | MIN |
| +051+ | 3.7 | Storm Davis | 224.7 | BAL |
| +054+ | 3.61 | Ray Burris | 211.3 | OAK |
| +056+ | 3.58 | Ricky Mahler | 222 | ATL |
| +057+ | 3.56 | Dan Schatzeder | 136.3 | WAS |
| +065+ | 3.36 | Mark Thurmond | 178.7 | SDN |
| +066+ | 3.35 | Bob Knepper | 234 | HOU |
| +069+ | 3.29 | Nolan Ryan | 183.7 | HOU |
| +072+ | 3.23 | Frank Tanana | 246.7 | TEX |
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