| 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 |
| Mickey Lolich | DET | 3.22 | 197209191_DET_CLE |
| Pat Dobson | BAL | 1.82 | 197209180_BAL_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sam McDowell | SFN | -2.55 | 197209190_SFN_CIN |
| Reggie Cleveland | SLN | -1.65 | 197209170_PIT_SLN |
| Jerry Koosman | NYN | -1.6 | 197209190_PIT_NYN |
| Ernie McAnally | WAS | -1.4 | 197209170_WAS_PHI |
| Bill Parsons | MIL | -1.18 | 197209190_NYA_MIL |
Based on accumulated WAA for this season up to 1972-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 9.03 | Gaylord Perry | 313.7 | CLE |
| +006+ | 8.8 | Jim Palmer | 252.7 | BAL |
| +008+ | 8.71 | Steve Carlton | 311.3 | PHI |
| +011+ | 7.66 | Wilbur Wood | 350.7 | CHA |
| +012+ | 7.33 | Jim Hunter | 273.3 | OAK |
| +017+ | 6.03 | Steve Kline | 215 | NYA |
| +019+ | 5.94 | Don Sutton | 243.7 | LAN |
| +024+ | 5.16 | Nolan Ryan | 248.3 | ANA |
| +026+ | 4.98 | Mickey Lolich | 297.3 | DET |
| +032+ | 4.65 | Bob Gibson | 251 | SLN |
| +034+ | 4.62 | Gary Nolan | 171 | CIN |
| +036+ | 4.46 | Steve Blass | 229 | PIT |
| +038+ | 4.37 | Jon Matlack | 220.7 | NYN |
| +039+ | 4.33 | Pat Dobson | 257.3 | BAL |
| +042+ | 4.29 | Roger Nelson | 149.3 | KCA |
| +045+ | 4.22 | Luis Tiant | 144.7 | BOS |
| +048+ | 4.06 | Joe Coleman | 255.7 | DET |
| +053+ | 3.93 | Mike Cuellar | 227.7 | BAL |
| +058+ | 3.58 | Ken Holtzman | 243 | OAK |
| +060+ | 3.49 | Mike Paul | 141 | TEX |
| +061+ | 3.29 | Dick Woodson | 229.7 | MIN |
| +064+ | 3.2 | Johnny Odom | 179.3 | OAK |
| +066+ | 3.16 | Dick Tidrow | 212 | CLE |
| +067+ | 3.11 | Jim McAndrew | 146 | NYN |
| +068+ | 3.11 | Jim Kaat | 113.3 | MIN |
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