| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 7.19 | 197105190_BAL_TEX |
| Jerry Koosman | NYN | 5.04 | 197105190_NYN_PHI |
| Bob Gibson | SLN | 4.44 | 197105190_LAN_SLN |
| Andy Messersmith | ANA | 3.95 | 197105190_MIN_ANA |
| Fritz Peterson | NYA | 3.48 | 197105180_BAL_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Murphy | ANA | -3.07 | 197105180_MIN_ANA |
| Clay Kirby | SDN | -2.35 | 197105200_SDN_HOU |
| Gary Peters | BOS | -2.33 | 197105180_DET_BOS |
| Steve Blass | PIT | -1.43 | 197105200_PIT_CIN |
| Lew Krausse | MIL | -1 | 197105200_MIL_OAK |
Based on accumulated WAA for this season up to 1971-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.61 | Vida Blue | 86.7 | OAK |
| +003+ | 3.16 | Tom Bradley | 69 | CHA |
| +006+ | 2.79 | Sonny Siebert | 69.3 | BOS |
| +012+ | 2.41 | Bert Blyleven | 71.7 | MIN |
| +014+ | 2.19 | Steve Kline | 65 | NYA |
| +015+ | 2.18 | Tom Seaver | 73 | NYN |
| +016+ | 2.14 | Juan Marichal | 79.3 | SFN |
| +017+ | 2.14 | Jim Palmer | 74 | BAL |
| +018+ | 1.99 | Bill Parsons | 61.3 | MIL |
| +019+ | 1.97 | Dock Ellis | 61.7 | PIT |
| +025+ | 1.78 | Larry Dierker | 70.7 | HOU |
| +027+ | 1.68 | Bruce DalCanton | 52.3 | KCA |
| +029+ | 1.6 | Mike Hedlund | 54 | KCA |
| +031+ | 1.54 | Al Downing | 65.3 | LAN |
| +034+ | 1.5 | Dick Drago | 55.3 | KCA |
| +035+ | 1.5 | Nolan Ryan | 32.3 | NYN |
| +038+ | 1.39 | Gary Gentry | 60.3 | NYN |
| +040+ | 1.38 | Dave Roberts | 53 | SDN |
| +044+ | 1.32 | Ron Bryant | 52.3 | SFN |
| +046+ | 1.28 | Ferguson Jenkins | 84 | CHN |
| XXXXX | 1.24 | Clyde Wright | 76.7 | ANA |
| XXXXX | 1.2 | Steve Carlton | 65.7 | SLN |
| XXXXX | 1.1 | Ray Lamb | 40.3 | CLE |
| XXXXX | 1.1 | Jerry Koosman | 56.7 | NYN |
| XXXXX | 1.09 | Bob Johnson | 48 | PIT |
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