| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 7.73 | 197306160_TEX_BAL |
| Don Sutton | LAN | 4.93 | 197306170_LAN_WAS |
| Bert Blyleven | MIN | 4.66 | 197306160_MIN_DET |
| Gaylord Perry | CLE | 4.16 | 197306171_KCA_CLE |
| Ken Holtzman | OAK | 4.11 | 197306170_BOS_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pete Broberg | TEX | -1.94 | 197306180_TEX_MIN |
| Mike Kekich | CLE | -1.73 | 197306172_KCA_CLE |
| Rich Hand | ANA | -1.42 | 197306172_NYA_ANA |
| Steve Busby | KCA | -1.41 | 197306160_KCA_CLE |
| Ron Reed | ATL | -1.28 | 197306180_ATL_LAN |
Based on accumulated WAA for this season up to 1973-06-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 5.82 | Ken Holtzman | 138 | OAK |
| +003+ | 4.68 | Rick Reuschel | 106 | CHN |
| +004+ | 4.6 | Wilbur Wood | 170.3 | CHA |
| +007+ | 4.45 | Tom Seaver | 114.3 | NYN |
| +008+ | 4.34 | Bill Lee | 107.3 | BOS |
| +009+ | 4.17 | Jim Colborn | 116.7 | MIL |
| +010+ | 4.06 | Ron Bryant | 117.7 | SFN |
| +012+ | 3.67 | Wayne Twitchell | 84.7 | PHI |
| +013+ | 3.33 | Bert Blyleven | 124.7 | MIN |
| +015+ | 3.24 | Nolan Ryan | 133 | ANA |
| +017+ | 3.11 | Paul Splittorff | 119.3 | KCA |
| +018+ | 3.08 | Jim Palmer | 109.3 | BAL |
| +020+ | 2.97 | Don Sutton | 121.7 | LAN |
| +021+ | 2.76 | Bill Singer | 125 | ANA |
| +023+ | 2.65 | Dave McNally | 114.3 | BAL |
| +025+ | 2.52 | Bill Greif | 99.3 | SDN |
| +030+ | 2.41 | Jerry Koosman | 102.7 | NYN |
| +031+ | 2.41 | Jim Hunter | 125 | OAK |
| +033+ | 2.37 | Dave Roberts | 90.3 | HOU |
| +034+ | 2.36 | Rollie Fingers | 47.7 | OAK |
| +037+ | 2.29 | Jim Perry | 101 | DET |
| +042+ | 2.23 | Rick Wise | 110 | SLN |
| +043+ | 2.2 | Alan Foster | 68.7 | SLN |
| +044+ | 2.16 | Bob Gibson | 114 | SLN |
| +052+ | 2 | Ross Grimsley | 99.3 | CIN |
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