| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 13.88 | 197109290_MIL_CHA |
| Tom Seaver | NYN | 11.63 | 197109300_SLN_NYN |
| Dave Roberts | SDN | 8.48 | 197109300_SFN_SDN |
| Don Wilson | HOU | 3.58 | 197109280_HOU_LAN |
| Al Downing | LAN | 3.21 | 197109290_HOU_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Hargan | CLE | -5.49 | 197109280_DET_CLE |
| Gary Peters | BOS | -2.38 | 197109282_BOS_BAL |
| Bill Singer | LAN | -1.76 | 197109280_HOU_LAN |
| Mike Kekich | NYA | -0.64 | 197109300_NYA_TEX |
| Bill Champion | PHI | -0.48 | 197109300_PIT_PHI |
Based on accumulated WAA for this season up to 1971-09-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.11 | Wilbur Wood | 334 | CHA |
| +003+ | 11.53 | Vida Blue | 312 | OAK |
| +004+ | 11.15 | Tom Seaver | 286.3 | NYN |
| +007+ | 8.62 | Dave Roberts | 269.7 | SDN |
| +015+ | 6.06 | Don Wilson | 268.3 | HOU |
| +017+ | 5.72 | Don Sutton | 265.3 | LAN |
| +021+ | 5.41 | Ferguson Jenkins | 325 | CHN |
| +022+ | 5.16 | Jim Palmer | 282 | BAL |
| +027+ | 4.85 | Al Downing | 262.3 | LAN |
| +034+ | 4.52 | Gaylord Perry | 280 | SFN |
| +035+ | 4.5 | Bert Blyleven | 278.3 | MIN |
| +036+ | 4.46 | Don Gullett | 217.7 | CIN |
| +037+ | 4.42 | Mickey Lolich | 376 | DET |
| +047+ | 4.1 | Clay Kirby | 268.3 | SDN |
| +048+ | 4.05 | Tug McGraw | 111 | NYN |
| +050+ | 3.94 | Mel Stottlemyre | 269.7 | NYA |
| +052+ | 3.88 | Ken Forsch | 188.3 | HOU |
| +053+ | 3.86 | Mike Hedlund | 205.7 | KCA |
| +056+ | 3.72 | Pat Dobson | 282.3 | BAL |
| +062+ | 3.46 | Rick Wise | 272.3 | PHI |
| +064+ | 3.39 | Juan Marichal | 279 | SFN |
| +066+ | 3.37 | Tom Bradley | 285.7 | CHA |
| +069+ | 3.31 | Steve Blass | 240 | PIT |
| +075+ | 3.02 | Dave McNally | 224.3 | BAL |
| +077+ | 3.01 | Dick Drago | 241.3 | KCA |
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