| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 15.8 | 197305280_CLE_CHA |
| Jim Palmer | BAL | 8.65 | 197305290_BAL_KCA |
| Tom Seaver | NYN | 6.73 | 197305290_NYN_SFN |
| Don Sutton | LAN | 6.06 | 197305270_NYN_LAN |
| Jim Hunter | OAK | 2.9 | 197305290_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Odom | OAK | -2.36 | 197305280_OAK_DET |
| Mike Corkins | SDN | -1.84 | 197305280_WAS_SDN |
| Reggie Cleveland | SLN | -1.49 | 197305270_ATL_SLN |
| Jerry Reuss | HOU | -0.9 | 197305290_HOU_CHN |
| Ken Brett | PHI | -0.89 | 197305290_PHI_LAN |
Based on accumulated WAA for this season up to 1973-05-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.41 | Wilbur Wood | 131.7 | CHA |
| +002+ | 4.48 | Ken Holtzman | 102.3 | OAK |
| +004+ | 3.77 | Tom Seaver | 89.3 | NYN |
| +007+ | 3.38 | Rick Reuschel | 73 | CHN |
| +008+ | 3.19 | Jim Perry | 79.3 | DET |
| +009+ | 3.11 | Bill Singer | 96.7 | ANA |
| +012+ | 2.61 | Don Sutton | 90 | LAN |
| +011+ | 2.61 | Bill Lee | 74.7 | BOS |
| +016+ | 2.51 | Jim Palmer | 78 | BAL |
| +019+ | 2.38 | Ron Bryant | 83.3 | SFN |
| +021+ | 2.29 | Jim Colborn | 73.3 | MIL |
| +022+ | 2.28 | Gaylord Perry | 104.7 | CLE |
| +023+ | 2.25 | Paul Splittorff | 96.3 | KCA |
| +025+ | 2.19 | Joe Coleman | 92.7 | DET |
| +026+ | 2.18 | Nolan Ryan | 98 | ANA |
| +027+ | 2.1 | Bill Greif | 65.7 | SDN |
| +033+ | 1.83 | Mel Stottlemyre | 82.3 | NYA |
| +036+ | 1.7 | Dave McNally | 78.3 | BAL |
| +039+ | 1.65 | Alan Foster | 39.3 | SLN |
| +041+ | 1.62 | Stan Bahnsen | 90 | CHA |
| +042+ | 1.61 | Jerry Koosman | 70.7 | NYN |
| +046+ | 1.55 | Rollie Fingers | 34 | OAK |
| +047+ | 1.54 | Jack Billingham | 91.3 | CIN |
| +050+ | 1.52 | Bert Blyleven | 91.3 | MIN |
| +049+ | 1.52 | Ross Grimsley | 71 | CIN |
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