| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jerry Reuss | LAN | 6.17 | 198105130_WAS_LAN |
| Tommy John | NYA | 5.63 | 198105130_OAK_NYA |
| Larry Gura | KCA | 4.16 | 198105110_TEX_KCA |
| Phil Niekro | ATL | 3.66 | 198105120_PIT_ATL |
| Tom Seaver | CIN | 3.17 | 198105130_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Torrez | BOS | -5.56 | 198105130_BOS_MIN |
| Ray Burris | WAS | -1.55 | 198105120_WAS_LAN |
| Mike Krukow | CHN | -1.41 | 198105130_CHN_CIN |
| Mike LaCoss | CIN | -1.21 | 198105110_HOU_CIN |
| John Montefusco | ATL | -0.96 | 198105130_PIT_ATL |
Based on accumulated WAA for this season up to 1981-05-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.61 | Fernando Valenzuela | 63 | LAN |
| +003+ | 2.58 | Bob Knepper | 45.7 | HOU |
| +004+ | 2.39 | Doyle Alexander | 47.7 | SFN |
| +005+ | 2.35 | Steve McCatty | 56 | OAK |
| +009+ | 2.07 | Bryan Clark | 41.3 | SEA |
| +011+ | 1.84 | Tom Seaver | 61.3 | CIN |
| +012+ | 1.79 | Nolan Ryan | 35.7 | HOU |
| +013+ | 1.75 | Jerry Reuss | 43 | LAN |
| +016+ | 1.64 | Matt Keough | 55 | OAK |
| +017+ | 1.62 | Milt Wilcox | 52.3 | DET |
| +019+ | 1.58 | Bert Blyleven | 44 | CLE |
| +023+ | 1.46 | Phil Niekro | 44 | ATL |
| +028+ | 1.34 | Rudy May | 54 | NYA |
| +027+ | 1.34 | Gaylord Perry | 53.3 | ATL |
| +029+ | 1.29 | Scott Sanderson | 42.3 | WAS |
| +030+ | 1.29 | Len Barker | 32.3 | CLE |
| +032+ | 1.27 | Andy Rincon | 35.7 | SLN |
| XXXXX | 1.24 | Brian Kingman | 42 | OAK |
| XXXXX | 1.2 | Vida Blue | 46 | SFN |
| XXXXX | 1.14 | Joe Niekro | 54 | HOU |
| XXXXX | 1.08 | Burt Hooton | 47.7 | LAN |
| XXXXX | 1.07 | Larry Gura | 54 | KCA |
| XXXXX | 1.05 | Steve Trout | 33.7 | CHA |
| XXXXX | 1.02 | Juan Eichelberger | 46.3 | SDN |
| XXXXX | 0.99 | Jerry Augustine | 18 | MIL |
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