| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 8.82 | 197105170_NYN_ATL |
| Jim Palmer | BAL | 7.19 | 197105190_BAL_TEX |
| Mel Stottlemyre | NYA | 4.72 | 197105170_BAL_NYA |
| Bob Gibson | SLN | 4.44 | 197105190_LAN_SLN |
| Andy Messersmith | ANA | 3.95 | 197105190_MIN_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Murphy | ANA | -3.07 | 197105180_MIN_ANA |
| Jim Bunning | PHI | -2.74 | 197105170_PHI_CIN |
| Gary Peters | BOS | -2.33 | 197105180_DET_BOS |
| Jim Merritt | CIN | -2.12 | 197105170_PHI_CIN |
| Steve Arlin | SDN | -1.02 | 197105180_SDN_HOU |
Based on accumulated WAA for this season up to 1971-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.61 | Vida Blue | 86.7 | OAK |
| +003+ | 3.16 | Tom Bradley | 69 | CHA |
| +004+ | 2.91 | Juan Marichal | 73 | SFN |
| +007+ | 2.79 | Sonny Siebert | 69.3 | BOS |
| +012+ | 2.4 | Bert Blyleven | 71.7 | MIN |
| +014+ | 2.18 | Steve Kline | 65 | NYA |
| +015+ | 2.16 | Tom Seaver | 73 | NYN |
| +016+ | 2.14 | Jim Palmer | 74 | BAL |
| +019+ | 1.98 | Bill Parsons | 61.3 | MIL |
| +020+ | 1.96 | Dock Ellis | 61.7 | PIT |
| +023+ | 1.78 | Larry Dierker | 70.7 | HOU |
| +025+ | 1.68 | Bruce DalCanton | 52.3 | KCA |
| +027+ | 1.6 | Mike Hedlund | 54 | KCA |
| +030+ | 1.53 | Al Downing | 65.3 | LAN |
| +032+ | 1.5 | Dick Drago | 55.3 | KCA |
| +033+ | 1.49 | Nolan Ryan | 32.3 | NYN |
| +038+ | 1.38 | Dave Roberts | 53 | SDN |
| +042+ | 1.31 | Ron Bryant | 52.3 | SFN |
| +045+ | 1.28 | Ferguson Jenkins | 84 | CHN |
| XXXXX | 1.13 | Ray Lamb | 40.3 | CLE |
| XXXXX | 1.13 | Mickey Lolich | 90.3 | DET |
| XXXXX | 1.09 | Jerry Koosman | 56.7 | NYN |
| XXXXX | 1.08 | Bob Johnson | 48 | PIT |
| XXXXX | 1.07 | Ken Forsch | 24.3 | HOU |
| XXXXX | 1.06 | Lew Krausse | 44.7 | MIL |
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