| Starter | Tm | Tier | Game |
|---|---|---|---|
| Larry McWilliams | PIT | 5.91 | 198409080_SLN_PIT |
| Mike Boddicker | BAL | 4.57 | 198409090_MIL_BAL |
| John Denny | PHI | 3.52 | 198409080_PHI_WAS |
| Joe Niekro | HOU | 3.51 | 198409070_HOU_SDN |
| Orel Hershiser | LAN | 3.27 | 198409090_CIN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Matt Young | SEA | -6.89 | 198409070_SEA_KCA |
| Neal Heaton | CLE | -5.5 | 198409080_OAK_CLE |
| Chris Codiroli | OAK | -2.74 | 198409080_OAK_CLE |
| Jim Clancy | TOR | -2.71 | 198409090_DET_TOR |
| Jim Slaton | ANA | -2.14 | 198409080_ANA_CHA |
Based on accumulated WAA for this season up to 1984-09-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.44 | Dave Stieb | 231.3 | TOR |
| +011+ | 6.1 | Mike Boddicker | 229.3 | BAL |
| +015+ | 5.29 | Larry McWilliams | 202 | PIT |
| +018+ | 5.09 | John Candelaria | 173.3 | PIT |
| +019+ | 5.07 | Charlie Lea | 220.3 | WAS |
| +021+ | 4.97 | John Denny | 125.7 | PHI |
| +024+ | 4.89 | Joe Niekro | 217.7 | HOU |
| +027+ | 4.65 | Orel Hershiser | 160.7 | LAN |
| +031+ | 4.33 | Dwight Gooden | 193 | NYN |
| +032+ | 4.22 | Rick Rhoden | 206.7 | PIT |
| +034+ | 4.12 | Storm Davis | 202.3 | BAL |
| +035+ | 4.09 | Ricky Mahler | 185.3 | ATL |
| +038+ | 4.01 | Phil Niekro | 204 | NYA |
| +040+ | 3.99 | Dan Schatzeder | 123 | WAS |
| +042+ | 3.87 | Joaquin Andujar | 233 | SLN |
| +045+ | 3.82 | Bob Knepper | 205.7 | HOU |
| +047+ | 3.76 | Bert Blyleven | 201.7 | CLE |
| +048+ | 3.72 | Fernando Valenzuela | 229 | LAN |
| +050+ | 3.7 | Rick Honeycutt | 181 | LAN |
| +051+ | 3.63 | Jerry Koosman | 196.3 | PHI |
| +057+ | 3.47 | Ray Burris | 179.7 | OAK |
| +061+ | 3.29 | Frank Tanana | 217.3 | TEX |
| +062+ | 3.25 | John Butcher | 196 | MIN |
| +064+ | 3.22 | Bryn Smith | 164 | WAS |
| +065+ | 3.21 | Frank Viola | 216.7 | MIN |
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