| Starter | Tm | Tier | Game |
|---|---|---|---|
| John Denny | PHI | 8.25 | 198309120_NYN_PHI |
| Mario Soto | CIN | 7.71 | 198309130_ATL_CIN |
| Steve Rogers | WAS | 5.03 | 198309120_WAS_CHN |
| Bob Welch | LAN | 4.58 | 198309140_LAN_HOU |
| Scott McGregor | BAL | 3.92 | 198309131_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | MIN | -5.4 | 198309130_CHA_MIN |
| Frank Pastore | CIN | -3.38 | 198309140_ATL_CIN |
| Dennis Martinez | BAL | -3.32 | 198309140_BAL_BOS |
| Mike Caldwell | MIL | -2.37 | 198309130_MIL_NYA |
| Tommy John | ANA | -2.23 | 198309140_KCA_ANA |
Based on accumulated WAA for this season up to 1983-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 7.7 | Mario Soto | 252.3 | CIN |
| +003+ | 7.4 | John Denny | 216.7 | PHI |
| +007+ | 6.48 | Atlee Hammaker | 172.3 | SFN |
| +014+ | 5.75 | Dave Stieb | 247.7 | TOR |
| +016+ | 5.67 | Alejandro Pena | 157.3 | LAN |
| +020+ | 5.26 | Bob Welch | 188 | LAN |
| +024+ | 4.89 | Rick Honeycutt | 203.3 | TOT |
| +026+ | 4.79 | Nolan Ryan | 174.7 | HOU |
| +028+ | 4.57 | Jerry Reuss | 201.3 | LAN |
| +030+ | 4.5 | Scott McGregor | 237.3 | BAL |
| +031+ | 4.5 | Steve Rogers | 247.7 | WAS |
| +034+ | 4.29 | Steve Carlton | 261.7 | PHI |
| +042+ | 3.88 | Charlie Lea | 198 | WAS |
| +047+ | 3.71 | Jack Morris | 256.7 | DET |
| +046+ | 3.71 | Mike Boddicker | 153.7 | BAL |
| +049+ | 3.65 | Matt Young | 194 | SEA |
| +052+ | 3.42 | Joe Price | 144.7 | CIN |
| +056+ | 3.28 | Rick Rhoden | 220.3 | PIT |
| +060+ | 3.11 | Mark Thurmond | 98 | SDN |
| +064+ | 2.9 | Larry McWilliams | 209 | PIT |
| +067+ | 2.81 | Juan Berenguer | 142.3 | DET |
| +073+ | 2.76 | Charlie Hough | 226.7 | TEX |
| +074+ | 2.72 | Bryn Smith | 130.3 | WAS |
| +078+ | 2.65 | Dave Righetti | 215 | NYA |
| +083+ | 2.57 | Frank Tanana | 139.7 | TEX |
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