| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 10.05 | 197307270_NYN_SLN |
| Bert Blyleven | MIN | 5.67 | 197307270_OAK_MIN |
| Don Sutton | LAN | 5.57 | 197307280_SFN_LAN |
| Wilbur Wood | CHA | 4.87 | 197307290_CHA_MIN |
| Jim Palmer | BAL | 4.72 | 197307271_CLE_BAL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mike Kekich | CLE | -3.03 | 197307280_BOS_CLE |
| Steve Dunning | TEX | -2.83 | 197307280_TEX_OAK |
| Johnny Odom | OAK | -2.55 | 197307280_TEX_OAK |
| Steve Busby | KCA | -2.01 | 197307270_CHA_KCA |
| Jim Lonborg | PHI | -1.99 | 197307270_WAS_PHI |
Based on accumulated WAA for this season up to 1973-07-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.32 | Tom Seaver | 178.7 | NYN |
| +003+ | 6.67 | Ken Holtzman | 205.7 | OAK |
| +007+ | 5.45 | Wayne Twitchell | 146.7 | PHI |
| +008+ | 5.36 | Bert Blyleven | 200 | MIN |
| +009+ | 5.09 | Don Sutton | 186 | LAN |
| +013+ | 4.52 | Bill Lee | 175.3 | BOS |
| +017+ | 4.09 | Rollie Fingers | 83.7 | OAK |
| +018+ | 4.07 | Dave McNally | 172.7 | BAL |
| +020+ | 4 | Rick Reuschel | 159 | CHN |
| +021+ | 3.98 | Jim Colborn | 192.7 | MIL |
| +022+ | 3.95 | Jim Palmer | 178.7 | BAL |
| +023+ | 3.88 | Nolan Ryan | 211.3 | ANA |
| +026+ | 3.74 | Bob Gibson | 179 | SLN |
| +027+ | 3.72 | Ross Grimsley | 156.7 | CIN |
| +028+ | 3.65 | Wilbur Wood | 260.3 | CHA |
| +029+ | 3.49 | Jack Billingham | 188 | CIN |
| +030+ | 3.48 | Stan Bahnsen | 185.7 | CHA |
| +031+ | 3.46 | Fred Beene | 67.3 | NYA |
| +036+ | 3.29 | Bill Singer | 199.7 | ANA |
| +040+ | 3.11 | Ron Bryant | 175.7 | SFN |
| +045+ | 2.96 | Nelson Briles | 149.7 | PIT |
| +046+ | 2.95 | Dave Roberts | 152.7 | HOU |
| +047+ | 2.94 | Lindy McDaniel | 99.3 | NYA |
| +055+ | 2.72 | Steve Renko | 144 | WAS |
| +056+ | 2.7 | Tommy John | 126.7 | LAN |
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