| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 5.54 | 197307310_BAL_CLE |
| Ken Holtzman | OAK | 5.34 | 197307310_MIN_OAK |
| Wilbur Wood | CHA | 4.87 | 197307290_CHA_MIN |
| Bob Gibson | SLN | 3.22 | 197307300_SLN_CHN |
| Bill Lee | BOS | 3.15 | 197307310_NYA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Woodie Fryman | DET | -2.53 | 197307312_DET_MIL |
| Jim Lonborg | PHI | -1.89 | 197307311_CHN_PHI |
| Jimmy Freeman | ATL | -1.74 | 197307312_CIN_ATL |
| Dick Tidrow | CLE | -1.19 | 197307310_BAL_CLE |
| Steve Arlin | SDN | -1 | 197307310_SFN_SDN |
Based on accumulated WAA for this season up to 1973-07-31.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 7.3 | Tom Seaver | 178.7 | NYN |
| +002+ | 6.94 | Ken Holtzman | 216.7 | OAK |
| +007+ | 5.44 | Wayne Twitchell | 146.7 | PHI |
| +009+ | 5.32 | Bert Blyleven | 200 | MIN |
| +010+ | 5.11 | Don Sutton | 186 | LAN |
| +014+ | 4.51 | Jim Palmer | 187.7 | BAL |
| +016+ | 4.46 | Rick Reuschel | 166.7 | CHN |
| +017+ | 4.37 | Bill Lee | 183.3 | BOS |
| +021+ | 4.07 | Dave McNally | 172.7 | BAL |
| +022+ | 4.04 | Stan Bahnsen | 194.7 | CHA |
| +024+ | 3.87 | Nolan Ryan | 211.3 | ANA |
| +026+ | 3.82 | Bob Gibson | 187 | SLN |
| +028+ | 3.7 | Jim Colborn | 201.7 | MIL |
| +029+ | 3.64 | Wilbur Wood | 260.3 | CHA |
| +032+ | 3.53 | Fred Beene | 75.3 | NYA |
| +034+ | 3.49 | Jack Billingham | 188 | CIN |
| +037+ | 3.28 | Bill Singer | 199.7 | ANA |
| +039+ | 3.19 | Dave Roberts | 160.3 | HOU |
| +042+ | 3.02 | Lindy McDaniel | 102.7 | NYA |
| +043+ | 3.01 | Steve Renko | 150 | WAS |
| +045+ | 2.95 | Nelson Briles | 149.7 | PIT |
| +049+ | 2.84 | Dock Ellis | 148.3 | PIT |
| +050+ | 2.81 | Ron Bryant | 181.7 | SFN |
| +056+ | 2.71 | Ross Grimsley | 159.7 | CIN |
| +060+ | 2.67 | Tommy John | 133.7 | LAN |
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