| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 6.71 | 197308120_BAL_KCA |
| Ken Holtzman | OAK | 6.19 | 197308120_OAK_NYA |
| Bert Blyleven | MIN | 5.95 | 197308130_DET_MIN |
| Rick Reuschel | CHN | 3.85 | 197308110_HOU_CHN |
| Nolan Ryan | ANA | 2.92 | 197308110_ANA_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Johnny Odom | OAK | -2.55 | 197308130_OAK_BOS |
| Woodie Fryman | DET | -1.79 | 197308130_DET_MIN |
| Mike Torrez | WAS | -1.23 | 197308130_WAS_LAN |
| Dick Tidrow | CLE | -1.16 | 197308120_CLE_TEX |
| Clay Kirby | SDN | -0.67 | 197308121_WAS_SDN |
Based on accumulated WAA for this season up to 1973-08-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.77 | Tom Seaver | 203.7 | NYN |
| +005+ | 6.41 | Wayne Twitchell | 172.7 | PHI |
| +006+ | 6.13 | Ken Holtzman | 234.3 | OAK |
| +007+ | 6.1 | Don Sutton | 203 | LAN |
| +010+ | 5.83 | Rick Reuschel | 189 | CHN |
| +012+ | 5.52 | Bert Blyleven | 231.7 | MIN |
| +013+ | 5.36 | Jim Palmer | 211.7 | BAL |
| +020+ | 4.48 | Fred Beene | 89 | NYA |
| +021+ | 4.47 | Bill Lee | 199.3 | BOS |
| +022+ | 4.43 | Nolan Ryan | 237.3 | ANA |
| +027+ | 4.13 | Ron Bryant | 205.7 | SFN |
| +029+ | 4.01 | Steve Renko | 173.7 | WAS |
| +030+ | 3.99 | Bob Gibson | 189 | SLN |
| +033+ | 3.75 | Terry Forster | 106.7 | CHA |
| +034+ | 3.74 | Nelson Briles | 173 | PIT |
| +036+ | 3.68 | Jim Colborn | 223.7 | MIL |
| +037+ | 3.64 | Andy Messersmith | 198.7 | LAN |
| +039+ | 3.53 | Don Wilson | 191.7 | HOU |
| +041+ | 3.42 | Dave Roberts | 180.7 | HOU |
| +043+ | 3.4 | Steve Rogers | 51 | WAS |
| +044+ | 3.31 | Dock Ellis | 163.3 | PIT |
| +048+ | 3.19 | Rogelio Moret | 89 | BOS |
| +052+ | 3.15 | Claude Osteen | 187.7 | LAN |
| +054+ | 3.1 | Ross Grimsley | 174.7 | CIN |
| +056+ | 2.98 | Rick Wise | 187 | SLN |
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