| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Niekro | HOU | 4.42 | 198106090_HOU_PHI |
| Phil Niekro | ATL | 3.91 | 198106090_ATL_WAS |
| Scott Sanderson | WAS | 3.64 | 198106090_ATL_WAS |
| Burt Hooton | LAN | 3.08 | 198106090_LAN_SLN |
| Scott McGregor | BAL | 1.99 | 198106092_BAL_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Krukow | CHN | -4.59 | 198106090_SFN_CHN |
| Mike Torrez | BOS | -3 | 198106090_BOS_SEA |
| Rich Gale | KCA | -2.85 | 198106080_NYA_KCA |
| Glenn Abbott | SEA | -2.65 | 198106070_CLE_SEA |
| Bruce Berenyi | CIN | -2.38 | 198106070_WAS_CIN |
Based on accumulated WAA for this season up to 1981-06-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.77 | Bob Knepper | 86.7 | HOU |
| +003+ | 3.57 | Nolan Ryan | 72 | HOU |
| +006+ | 3.1 | Fernando Valenzuela | 103.3 | LAN |
| +007+ | 2.9 | Ken Forsch | 94 | ANA |
| +009+ | 2.86 | Len Barker | 82.7 | CLE |
| +011+ | 2.78 | Tom Seaver | 78.3 | CIN |
| +012+ | 2.75 | Steve McCatty | 94.3 | OAK |
| +014+ | 2.58 | Jerry Reuss | 71.7 | LAN |
| +017+ | 2.48 | Vida Blue | 81.3 | SFN |
| +016+ | 2.48 | Jack Morris | 103.3 | DET |
| +019+ | 2.36 | Scott Sanderson | 70.7 | WAS |
| +022+ | 2.16 | Steve Carlton | 98 | PHI |
| +021+ | 2.16 | Doyle Alexander | 72.3 | SFN |
| +037+ | 1.74 | Bert Blyleven | 84.3 | CLE |
| +043+ | 1.59 | Jim Bibby | 71.7 | PIT |
| +046+ | 1.57 | Richard Dotson | 89 | CHA |
| +048+ | 1.49 | Joe Niekro | 95.3 | HOU |
| +050+ | 1.49 | Rick Langford | 94.3 | OAK |
| +052+ | 1.46 | Dave Righetti | 30 | NYA |
| +053+ | 1.44 | Brian Kingman | 76 | OAK |
| +056+ | 1.41 | Andy Rincon | 35.7 | SLN |
| +062+ | 1.34 | John Martin | 37.3 | SLN |
| +063+ | 1.34 | Rick Waits | 69.3 | CLE |
| +066+ | 1.31 | Mike Caldwell | 88.3 | MIL |
| +067+ | 1.3 | Juan Eichelberger | 73.7 | SDN |
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