| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rudy May | NYA | 6.92 | 198105031_NYA_OAK |
| Steve Carlton | PHI | 5.27 | 198105040_SFN_PHI |
| Joe Niekro | HOU | 4.41 | 198105050_HOU_CHN |
| Jim Bibby | PIT | 3.82 | 198105030_HOU_PIT |
| Steve Rogers | WAS | 3.04 | 198105040_LAN_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Gale | KCA | -2.35 | 198105040_BOS_KCA |
| Wayne Garland | CLE | -1.87 | 198105030_CHA_CLE |
| Mike Scott | NYN | -1.77 | 198105032_SDN_NYN |
| Frank Tanana | BOS | -1.65 | 198105050_BOS_KCA |
| Lynn McGlothen | CHN | -1.54 | 198105030_ATL_CHN |
Based on accumulated WAA for this season up to 1981-05-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.86 | Fernando Valenzuela | 54 | LAN |
| +002+ | 2.33 | Matt Keough | 45 | OAK |
| +006+ | 1.86 | Doyle Alexander | 33.7 | SFN |
| +007+ | 1.83 | Larry Gura | 48.3 | KCA |
| +009+ | 1.65 | Steve McCatty | 47 | OAK |
| +010+ | 1.55 | Mike Norris | 51 | OAK |
| +012+ | 1.51 | Brian Kingman | 34.7 | OAK |
| +013+ | 1.43 | Jerry Reuss | 26 | LAN |
| +016+ | 1.36 | Bob Knepper | 27.7 | HOU |
| +017+ | 1.35 | Rick Waits | 27 | CLE |
| +022+ | 1.29 | Rudy May | 46 | NYA |
| XXXXX | 1.17 | Joe Niekro | 49 | HOU |
| XXXXX | 1.16 | Jerry Augustine | 15 | MIL |
| XXXXX | 1.13 | Bryan Clark | 24.7 | SEA |
| XXXXX | 1.04 | Tommy John | 43 | NYA |
| XXXXX | 1.02 | Tom Seaver | 43.3 | CIN |
| XXXXX | 1 | Gaylord Perry | 35 | ATL |
| XXXXX | 0.96 | Steve Renko | 22 | ANA |
| XXXXX | 0.95 | Milt Wilcox | 34.3 | DET |
| XXXXX | 0.93 | Len Barker | 24.3 | CLE |
| XXXXX | 0.93 | Steve Carlton | 51 | PHI |
| XXXXX | 0.87 | Lary Sorensen | 36.7 | SLN |
| XXXXX | 0.87 | Mike Flanagan | 38.3 | BAL |
| XXXXX | 0.87 | Vida Blue | 37 | SFN |
| XXXXX | 0.84 | Mark Bomback | 29.3 | TOR |
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