| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Carlton | PHI | 4.43 | 198105090_SDN_PHI |
| Larry Gura | KCA | 4.16 | 198105110_TEX_KCA |
| Joe Niekro | HOU | 3.83 | 198105100_HOU_CIN |
| Gaylord Perry | ATL | 2.79 | 198105110_PIT_ATL |
| Steve Rogers | WAS | 2.73 | 198105090_SFN_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rich Gale | KCA | -2.25 | 198105090_KCA_CHA |
| Wayne Garland | CLE | -2.09 | 198105100_CLE_MIN |
| Tim Lollar | SDN | -2.02 | 198105090_SDN_PHI |
| Mike LaCoss | CIN | -1.21 | 198105110_HOU_CIN |
| Frank Tanana | BOS | -1.2 | 198105100_BOS_TOR |
Based on accumulated WAA for this season up to 1981-05-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.68 | Fernando Valenzuela | 63 | LAN |
| +003+ | 2.39 | Steve McCatty | 56 | OAK |
| +005+ | 2.12 | Bob Knepper | 36.7 | HOU |
| +008+ | 1.99 | Jerry Reuss | 35 | LAN |
| +009+ | 1.91 | Matt Keough | 47.3 | OAK |
| +010+ | 1.87 | Doyle Alexander | 40.7 | SFN |
| +011+ | 1.83 | Nolan Ryan | 35.7 | HOU |
| +012+ | 1.8 | Tom Seaver | 52.3 | CIN |
| +015+ | 1.74 | Bert Blyleven | 44 | CLE |
| +018+ | 1.47 | Bryan Clark | 33.7 | SEA |
| +019+ | 1.44 | Gaylord Perry | 53.3 | ATL |
| +021+ | 1.41 | Rudy May | 54 | NYA |
| +022+ | 1.4 | Len Barker | 32.3 | CLE |
| +025+ | 1.37 | Tommy John | 51 | NYA |
| +026+ | 1.35 | Milt Wilcox | 43.3 | DET |
| +030+ | 1.3 | Andy Rincon | 35.7 | SLN |
| +031+ | 1.27 | Brian Kingman | 42 | OAK |
| +032+ | 1.25 | Vida Blue | 46 | SFN |
| XXXXX | 1.21 | Joe Niekro | 54 | HOU |
| XXXXX | 1.18 | Scott Sanderson | 35.3 | WAS |
| XXXXX | 1.13 | Larry Gura | 54 | KCA |
| XXXXX | 1.01 | Jerry Augustine | 18 | MIL |
| XXXXX | 0.97 | Geoff Zahn | 52.3 | ANA |
| XXXXX | 0.96 | Steve Trout | 28.7 | CHA |
| XXXXX | 0.96 | Rick Rhoden | 42 | PIT |
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