| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 10.46 | 197306260_MIN_CHA |
| Tom Seaver | NYN | 8.06 | 197306240_NYN_PIT |
| Jim Palmer | BAL | 7.23 | 197306260_BAL_MIL |
| Bert Blyleven | MIN | 6.67 | 197306250_MIN_CHA |
| Don Sutton | LAN | 5.47 | 197306260_LAN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Arlin | SDN | -2.83 | 197306240_ATL_SDN |
| Lloyd Allen | TEX | -2.44 | 197306242_TEX_KCA |
| Johnny Odom | OAK | -2.16 | 197306242_OAK_CHA |
| Brent Strom | CLE | -2.1 | 197306260_NYA_CLE |
| Jim Lonborg | PHI | -1.98 | 197306240_PHI_WAS |
Based on accumulated WAA for this season up to 1973-06-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.59 | Ken Holtzman | 149 | OAK |
| +004+ | 5.07 | Bill Lee | 125.3 | BOS |
| +006+ | 4.72 | Tom Seaver | 123.3 | NYN |
| +007+ | 4.68 | Rick Reuschel | 119.7 | CHN |
| +009+ | 4.23 | Wilbur Wood | 192.7 | CHA |
| +010+ | 4 | Bert Blyleven | 141.7 | MIN |
| +012+ | 3.88 | Don Sutton | 139.3 | LAN |
| +013+ | 3.72 | Bill Singer | 142.7 | ANA |
| +015+ | 3.41 | Ron Bryant | 128.7 | SFN |
| +016+ | 3.4 | Jim Colborn | 129.7 | MIL |
| +017+ | 3.38 | Wayne Twitchell | 99.7 | PHI |
| +018+ | 3.36 | Jim Palmer | 121.3 | BAL |
| +024+ | 2.74 | Nolan Ryan | 148.3 | ANA |
| +025+ | 2.7 | Rollie Fingers | 54.7 | OAK |
| +028+ | 2.55 | Ross Grimsley | 111.3 | CIN |
| +030+ | 2.51 | Rick Wise | 120 | SLN |
| +032+ | 2.5 | Sonny Siebert | 65.3 | TOT |
| +033+ | 2.46 | Jim Perry | 115 | DET |
| +037+ | 2.43 | Paul Splittorff | 132.7 | KCA |
| +039+ | 2.4 | Phil Niekro | 94.7 | ATL |
| +041+ | 2.34 | Gaylord Perry | 164.7 | CLE |
| +044+ | 2.31 | Jerry Koosman | 114.7 | NYN |
| +050+ | 2.13 | Dave McNally | 116.7 | BAL |
| +052+ | 2.08 | Ray Corbin | 59.3 | MIN |
| +059+ | 1.87 | Bill Greif | 110.3 | SDN |
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