| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gaylord Perry | CLE | 9.37 | 197209270_CLE_BAL |
| Jim Hunter | OAK | 6.98 | 197209272_MIN_OAK |
| Wilbur Wood | CHA | 5.09 | 197209270_KCA_CHA |
| Don Sutton | LAN | 4.91 | 197209270_SDN_LAN |
| Steve Kline | NYA | 3.55 | 197209270_NYA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sam McDowell | SFN | -3.01 | 197209260_SFN_HOU |
| Jerry Koosman | NYN | -2.23 | 197209260_NYN_SLN |
| Ken Brett | MIL | -2 | 197209270_MIL_BOS |
| Jerry Reuss | HOU | -1.65 | 197209260_SFN_HOU |
| Steve Renko | WAS | -1.34 | 197209270_CHN_WAS |
Based on accumulated WAA for this season up to 1972-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 10.09 | Gaylord Perry | 331.7 | CLE |
| +005+ | 9.49 | Steve Carlton | 328.3 | PHI |
| +008+ | 8.07 | Jim Hunter | 290.3 | OAK |
| +009+ | 7.98 | Jim Palmer | 264.3 | BAL |
| +013+ | 7.35 | Don Sutton | 263.7 | LAN |
| +018+ | 6.22 | Wilbur Wood | 368.7 | CHA |
| +019+ | 6.06 | Nolan Ryan | 266.3 | ANA |
| +024+ | 5.4 | Mickey Lolich | 306.3 | DET |
| +025+ | 5.36 | Steve Kline | 228.3 | NYA |
| +028+ | 5.14 | Luis Tiant | 162.7 | BOS |
| +029+ | 5.1 | Steve Blass | 247 | PIT |
| +032+ | 4.98 | Jon Matlack | 229.7 | NYN |
| +038+ | 4.82 | Bob Gibson | 260 | SLN |
| +041+ | 4.59 | Gary Nolan | 171 | CIN |
| +046+ | 4.18 | Pat Dobson | 261.3 | BAL |
| +047+ | 4.15 | Roger Nelson | 164.3 | KCA |
| +050+ | 4.06 | Ken Holtzman | 256.3 | OAK |
| +051+ | 4.02 | Mike Paul | 156.3 | TEX |
| +057+ | 3.74 | Mike Cuellar | 239.3 | BAL |
| +059+ | 3.6 | Dick Woodson | 237.7 | MIN |
| +061+ | 3.54 | Joe Coleman | 266 | DET |
| +063+ | 3.37 | Johnny Odom | 185.3 | OAK |
| +071+ | 3.15 | Dick Tidrow | 229.3 | CLE |
| +072+ | 3.07 | Jim Kaat | 113.3 | MIN |
| +073+ | 3.03 | Don Wilson | 220.3 | HOU |
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