| Starter | Tm | Tier | Game |
|---|---|---|---|
| Wilbur Wood | CHA | 11.42 | 197307060_BOS_CHA |
| Jim Palmer | BAL | 7.58 | 197307061_OAK_BAL |
| Bert Blyleven | MIN | 7.32 | 197307071_NYA_MIN |
| Don Sutton | LAN | 5.92 | 197307060_PIT_LAN |
| Ken Holtzman | OAK | 5.67 | 197307070_OAK_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Brent Strom | CLE | -2.19 | 197307050_CLE_DET |
| Steve Arlin | SDN | -2.16 | 197307050_SDN_LAN |
| Steve Busby | KCA | -2.05 | 197307060_DET_KCA |
| Jim Lonborg | PHI | -1.93 | 197307070_CIN_PHI |
| Jim McGlothlin | CIN | -1.43 | 197307070_CIN_PHI |
Based on accumulated WAA for this season up to 1973-07-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.5 | Ken Holtzman | 174.3 | OAK |
| +004+ | 5.24 | Bill Singer | 168 | ANA |
| +005+ | 5.14 | Wilbur Wood | 218 | CHA |
| +006+ | 5.08 | Tom Seaver | 137.7 | NYN |
| +007+ | 4.98 | Bert Blyleven | 167.7 | MIN |
| +011+ | 4.61 | Wayne Twitchell | 114.7 | PHI |
| +012+ | 4.27 | Rick Reuschel | 132 | CHN |
| +013+ | 4.23 | Don Sutton | 157 | LAN |
| +014+ | 4.02 | Bill Lee | 138 | BOS |
| +017+ | 3.64 | Rollie Fingers | 64.7 | OAK |
| +018+ | 3.61 | Dave McNally | 141.7 | BAL |
| +019+ | 3.57 | Ron Bryant | 150.3 | SFN |
| +020+ | 3.44 | Nolan Ryan | 174 | ANA |
| +024+ | 3.08 | Jim Palmer | 135.3 | BAL |
| +029+ | 2.96 | Sonny Siebert | 79.3 | TOT |
| +034+ | 2.81 | Fred Beene | 60.3 | NYA |
| +035+ | 2.78 | Ross Grimsley | 125.3 | CIN |
| +040+ | 2.66 | Rick Wise | 134.7 | SLN |
| +045+ | 2.47 | Jerry Koosman | 131.7 | NYN |
| +047+ | 2.45 | Steve Renko | 116.3 | WAS |
| +049+ | 2.37 | John Curtis | 128.7 | BOS |
| +053+ | 2.27 | Jim Colborn | 147.7 | MIL |
| +056+ | 2.17 | Bob Gibson | 146 | SLN |
| +059+ | 2.15 | Doc Medich | 114.7 | NYA |
| +060+ | 2.12 | Nelson Briles | 119 | PIT |
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