| Starter | Tm | Tier | Game |
|---|---|---|---|
| Gaylord Perry | CLE | 8.69 | 197209170_CLE_BOS |
| Wilbur Wood | CHA | 6.9 | 197209170_CHA_ANA |
| Jim Hunter | OAK | 6.14 | 197209170_TEX_OAK |
| Steve Kline | NYA | 5.17 | 197209160_BAL_NYA |
| Don Sutton | LAN | 3.37 | 197209160_LAN_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Santorini | SLN | -1.97 | 197209160_PIT_SLN |
| Wayne Twitchell | PHI | -1.8 | 197209160_WAS_PHI |
| Ernie McAnally | WAS | -1.4 | 197209170_WAS_PHI |
| Wayne Simpson | CIN | -1.13 | 197209170_SDN_CIN |
| Steve Arlin | SDN | -1.12 | 197209180_LAN_SDN |
Based on accumulated WAA for this season up to 1972-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 9 | Gaylord Perry | 313.7 | CLE |
| +005+ | 8.78 | Jim Palmer | 252.7 | BAL |
| +007+ | 8.7 | Steve Carlton | 311.3 | PHI |
| +009+ | 7.76 | Wilbur Wood | 350.7 | CHA |
| +012+ | 7.4 | Jim Hunter | 273.3 | OAK |
| +018+ | 6 | Steve Kline | 215 | NYA |
| +020+ | 5.9 | Don Sutton | 243.7 | LAN |
| +023+ | 5.14 | Nolan Ryan | 248.3 | ANA |
| +024+ | 5.09 | Mickey Lolich | 291.3 | DET |
| +032+ | 4.61 | Gary Nolan | 171 | CIN |
| +035+ | 4.44 | Steve Blass | 229 | PIT |
| +038+ | 4.35 | Jon Matlack | 220.7 | NYN |
| +041+ | 4.31 | Pat Dobson | 257.3 | BAL |
| +042+ | 4.28 | Roger Nelson | 149.3 | KCA |
| +045+ | 4.21 | Luis Tiant | 144.7 | BOS |
| +048+ | 4.01 | Joe Coleman | 255.7 | DET |
| +052+ | 3.91 | Mike Cuellar | 227.7 | BAL |
| +053+ | 3.88 | Bob Gibson | 241 | SLN |
| +056+ | 3.71 | Johnny Odom | 174.3 | OAK |
| +057+ | 3.64 | Ken Holtzman | 243 | OAK |
| +061+ | 3.47 | Mike Paul | 141 | TEX |
| +062+ | 3.47 | Dick Woodson | 224 | MIN |
| +064+ | 3.14 | Dick Tidrow | 212 | CLE |
| +065+ | 3.1 | Jim McAndrew | 146 | NYN |
| +066+ | 3.1 | Jim Kaat | 113.3 | MIN |
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