| Starter | Tm | Tier | Game |
|---|---|---|---|
| Lew Krausse | MIL | -2.37 | 197105010_MIL_NYA |
| Clay Kirby | SDN | -2.11 | 197105010_SDN_PIT |
| Rich Robertson | SFN | -1.84 | 197105010_SFN_CIN |
| Gary Peters | BOS | -1.7 | 197105010_MIN_BOS |
| Don Wilson | HOU | -1.08 | 197105020_NYN_HOU |
Based on accumulated WAA for this season up to 1971-05-03.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.64 | Vida Blue | 52.7 | OAK |
| +006+ | 2.3 | Larry Dierker | 52 | HOU |
| +008+ | 1.99 | Tom Bradley | 39 | CHA |
| +011+ | 1.79 | Al Downing | 38 | LAN |
| +012+ | 1.75 | Tom Seaver | 47.3 | NYN |
| +013+ | 1.69 | Steve Carlton | 49.3 | SLN |
| +015+ | 1.57 | Chris Short | 38 | PHI |
| +019+ | 1.47 | Dock Ellis | 46 | PIT |
| +020+ | 1.43 | Sonny Siebert | 45.3 | BOS |
| +021+ | 1.42 | Dick Drago | 39.3 | KCA |
| +023+ | 1.38 | Bert Blyleven | 46 | MIN |
| +025+ | 1.37 | Juan Marichal | 46 | SFN |
| +026+ | 1.3 | Ron Bryant | 28.3 | SFN |
| XXXXX | 1.17 | Jerry Koosman | 34.3 | NYN |
| XXXXX | 1.14 | Steve Renko | 38 | WAS |
| XXXXX | 1.12 | Luke Walker | 36 | PIT |
| XXXXX | 1.09 | Andy Messersmith | 44.3 | ANA |
| XXXXX | 1.06 | Ferguson Jenkins | 48 | CHN |
| XXXXX | 1.02 | Mike Hedlund | 34.3 | KCA |
| XXXXX | 1.01 | Bob Johnson | 32 | PIT |
| XXXXX | 0.97 | Ray Lamb | 22.7 | CLE |
| XXXXX | 0.96 | Steve Kline | 34 | NYA |
| XXXXX | 0.95 | Marty Pattin | 49.3 | MIL |
| XXXXX | 0.81 | Diego Segui | 42.7 | OAK |
| XXXXX | 0.72 | Jim Palmer | 41 | BAL |
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