| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jerry Reuss | LAN | 5.21 | 198105170_NYN_LAN |
| Tommy John | NYA | 3.87 | 198105180_KCA_NYA |
| Scott Sanderson | WAS | 2.91 | 198105180_WAS_SDN |
| Gaylord Perry | ATL | 2.84 | 198105170_SLN_ATL |
| Scott McGregor | BAL | 2.59 | 198105180_OAK_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Torrez | BOS | -4.7 | 198105180_SEA_BOS |
| Tim Lollar | SDN | -2.9 | 198105160_PHI_SDN |
| Mike Krukow | CHN | -2.48 | 198105170_CHN_HOU |
| Paul Splittorff | KCA | -1.98 | 198105180_KCA_NYA |
| Mike LaCoss | CIN | -1.77 | 198105160_CIN_PIT |
Based on accumulated WAA for this season up to 1981-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.62 | Fernando Valenzuela | 79 | LAN |
| +003+ | 2.95 | Bob Knepper | 53 | HOU |
| +004+ | 2.45 | Doyle Alexander | 54.3 | SFN |
| +006+ | 2.34 | Nolan Ryan | 42.7 | HOU |
| +007+ | 2.25 | Jerry Reuss | 52 | LAN |
| +010+ | 2.15 | Bert Blyleven | 54 | CLE |
| +009+ | 2.15 | Steve McCatty | 60.7 | OAK |
| +012+ | 1.99 | Len Barker | 41.3 | CLE |
| +014+ | 1.85 | Joe Niekro | 63 | HOU |
| +016+ | 1.82 | Tom Seaver | 61.3 | CIN |
| +017+ | 1.8 | Vida Blue | 54 | SFN |
| +018+ | 1.79 | Burt Hooton | 56.7 | LAN |
| +020+ | 1.67 | Scott Sanderson | 50 | WAS |
| +022+ | 1.55 | Brian Kingman | 48 | OAK |
| +027+ | 1.5 | Matt Keough | 63 | OAK |
| +028+ | 1.49 | Bryan Clark | 47 | SEA |
| +029+ | 1.47 | Phil Niekro | 44 | ATL |
| +030+ | 1.44 | Geoff Zahn | 61.3 | ANA |
| +035+ | 1.36 | Scott McGregor | 42 | BAL |
| +039+ | 1.29 | Andy Rincon | 35.7 | SLN |
| +044+ | 1.27 | Allen Ripley | 55.3 | SFN |
| XXXXX | 1.18 | Steve Trout | 40.7 | CHA |
| XXXXX | 1.09 | Ken Forsch | 59.7 | ANA |
| XXXXX | 1.01 | Rudy May | 60.7 | NYA |
| XXXXX | 0.97 | Tommy John | 62.7 | NYA |
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