| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rudy May | NYA | 5.46 | 198105190_KCA_NYA |
| Jerry Reuss | LAN | 5.21 | 198105170_NYN_LAN |
| Phil Niekro | ATL | 4.66 | 198105190_ATL_PIT |
| Tom Seaver | CIN | 3.12 | 198105190_CIN_CHN |
| Scott Sanderson | WAS | 2.91 | 198105180_WAS_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Torrez | BOS | -4.7 | 198105180_SEA_BOS |
| Dan Spillner | CLE | -2.6 | 198105190_ANA_CLE |
| Mike Krukow | CHN | -2.48 | 198105170_CHN_HOU |
| Paul Splittorff | KCA | -1.98 | 198105180_KCA_NYA |
| Mike Scott | NYN | -1.44 | 198105190_NYN_SFN |
Based on accumulated WAA for this season up to 1981-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.67 | Fernando Valenzuela | 79 | LAN |
| +003+ | 3 | Bob Knepper | 53 | HOU |
| +004+ | 2.49 | Doyle Alexander | 54.3 | SFN |
| +005+ | 2.38 | Nolan Ryan | 42.7 | HOU |
| +006+ | 2.29 | Jerry Reuss | 52 | LAN |
| +007+ | 2.27 | Tom Seaver | 66.3 | CIN |
| +009+ | 2.2 | Steve McCatty | 60.7 | OAK |
| +010+ | 2.18 | Bert Blyleven | 54 | CLE |
| +013+ | 2.02 | Len Barker | 41.3 | CLE |
| +015+ | 1.91 | Joe Niekro | 63 | HOU |
| +016+ | 1.83 | Vida Blue | 54 | SFN |
| +017+ | 1.82 | Burt Hooton | 56.7 | LAN |
| +018+ | 1.72 | Scott Sanderson | 50 | WAS |
| +020+ | 1.59 | Brian Kingman | 48 | OAK |
| +023+ | 1.55 | Matt Keough | 63 | OAK |
| +025+ | 1.53 | Bryan Clark | 47 | SEA |
| +031+ | 1.4 | Doug Bird | 32 | NYA |
| +032+ | 1.39 | Scott McGregor | 42 | BAL |
| +036+ | 1.31 | Allen Ripley | 55.3 | SFN |
| +035+ | 1.31 | Andy Rincon | 35.7 | SLN |
| XXXXX | 1.22 | Steve Trout | 40.7 | CHA |
| XXXXX | 1.14 | Ken Forsch | 59.7 | ANA |
| XXXXX | 1.01 | Tommy John | 62.7 | NYA |
| XXXXX | 0.99 | Mario Soto | 58.3 | CIN |
| XXXXX | 0.98 | Steve Carlton | 69 | PHI |
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