| Starter | Tm | Tier | Game |
|---|---|---|---|
| Joe Niekro | HOU | 5.13 | 198105250_SDN_HOU |
| Fernando Valenzuela | LAN | 4.52 | 198105230_LAN_CIN |
| Jim Bibby | PIT | 4.22 | 198105240_PHI_PIT |
| Rudy May | NYA | 3.98 | 198105240_CLE_NYA |
| Tom Seaver | CIN | 3.87 | 198105241_LAN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Torrez | BOS | -4.65 | 198105230_BOS_MIL |
| Rich Gale | KCA | -2.32 | 198105240_MIN_KCA |
| Jerry Gleaton | SEA | -2.3 | 198105252_KCA_SEA |
| Bob Walk | ATL | -1.91 | 198105250_LAN_ATL |
| Bruce Berenyi | CIN | -1.82 | 198105242_LAN_CIN |
Based on accumulated WAA for this season up to 1981-05-25.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.99 | Fernando Valenzuela | 87.3 | LAN |
| +002+ | 3.29 | Bob Knepper | 61.7 | HOU |
| +005+ | 2.75 | Doyle Alexander | 62.3 | SFN |
| +006+ | 2.74 | Jerry Reuss | 59.7 | LAN |
| +007+ | 2.69 | Nolan Ryan | 49 | HOU |
| +008+ | 2.58 | Tom Seaver | 69.3 | CIN |
| +010+ | 2.45 | Burt Hooton | 69 | LAN |
| +011+ | 2.42 | Bert Blyleven | 63 | CLE |
| +013+ | 2.25 | Vida Blue | 61.3 | SFN |
| +014+ | 2.22 | Joe Niekro | 79.7 | HOU |
| +018+ | 2.02 | Steve McCatty | 76.3 | OAK |
| +022+ | 1.87 | Len Barker | 56.3 | CLE |
| +023+ | 1.83 | Bryan Clark | 55.3 | SEA |
| +024+ | 1.82 | Matt Keough | 71.3 | OAK |
| +029+ | 1.72 | Scott McGregor | 50 | BAL |
| +032+ | 1.62 | Steve Trout | 49.7 | CHA |
| +033+ | 1.62 | Brian Kingman | 56 | OAK |
| +037+ | 1.59 | Steve Carlton | 77 | PHI |
| +039+ | 1.48 | Scott Sanderson | 56 | WAS |
| +045+ | 1.41 | Jim Bibby | 57.7 | PIT |
| +049+ | 1.37 | Andy Rincon | 35.7 | SLN |
| +055+ | 1.29 | Jim Palmer | 62.3 | BAL |
| XXXXX | 1.22 | Ken Forsch | 67 | ANA |
| XXXXX | 1.2 | Allen Ripley | 61.3 | SFN |
| XXXXX | 1.12 | Rick Waits | 52.3 | CLE |
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