| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Carlton | PHI | 9.99 | 197209240_PHI_NYN |
| Jim Palmer | BAL | 7.6 | 197209240_BAL_MIL |
| Wilbur Wood | CHA | 6.13 | 197209240_TEX_CHA |
| Nolan Ryan | ANA | 3.34 | 197209250_ANA_TEX |
| Luis Tiant | BOS | 2.8 | 197209240_DET_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sam McDowell | SFN | -3.01 | 197209260_SFN_HOU |
| Jerry Koosman | NYN | -2.23 | 197209260_NYN_SLN |
| Carl Morton | WAS | -1.93 | 197209240_WAS_PIT |
| Jerry Reuss | HOU | -1.65 | 197209260_SFN_HOU |
| Mike McQueen | ATL | -1.23 | 197209240_SDN_ATL |
Based on accumulated WAA for this season up to 1972-09-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9.53 | Steve Carlton | 328.3 | PHI |
| +005+ | 9.44 | Gaylord Perry | 322.7 | CLE |
| +008+ | 8.01 | Jim Palmer | 264.3 | BAL |
| +011+ | 7.61 | Jim Hunter | 280.3 | OAK |
| +016+ | 6.7 | Don Sutton | 254.7 | LAN |
| +017+ | 6.49 | Wilbur Wood | 360.7 | CHA |
| +019+ | 6.09 | Nolan Ryan | 266.3 | ANA |
| +022+ | 5.65 | Steve Kline | 221 | NYA |
| +024+ | 5.43 | Mickey Lolich | 306.3 | DET |
| +026+ | 5.15 | Luis Tiant | 162.7 | BOS |
| +028+ | 5.12 | Steve Blass | 247 | PIT |
| +033+ | 4.99 | Jon Matlack | 229.7 | NYN |
| +036+ | 4.85 | Bob Gibson | 260 | SLN |
| +039+ | 4.61 | Gary Nolan | 171 | CIN |
| +046+ | 4.21 | Pat Dobson | 261.3 | BAL |
| +048+ | 4.1 | Joe Coleman | 264.7 | DET |
| +049+ | 4.04 | Mike Paul | 156.3 | TEX |
| +054+ | 3.9 | Roger Nelson | 155.3 | KCA |
| +056+ | 3.77 | Mike Cuellar | 239.3 | BAL |
| +059+ | 3.65 | Dick Woodson | 237.7 | MIN |
| +063+ | 3.53 | Ken Holtzman | 248.3 | OAK |
| +064+ | 3.42 | Johnny Odom | 185.3 | OAK |
| +071+ | 3.18 | Dick Tidrow | 229.3 | CLE |
| +072+ | 3.09 | Jim Kaat | 113.3 | MIN |
| +074+ | 2.84 | Jim Lonborg | 212 | MIL |
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