| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Seaver | NYN | 10.94 | 197308100_NYN_SFN |
| Jim Palmer | BAL | 6.71 | 197308120_BAL_KCA |
| Ken Holtzman | OAK | 6.19 | 197308120_OAK_NYA |
| Wayne Twitchell | PHI | 4.27 | 197308100_PHI_LAN |
| Rick Reuschel | CHN | 3.85 | 197308110_HOU_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Arlin | SDN | -1.76 | 197308100_WAS_SDN |
| Dick Tidrow | CLE | -1.16 | 197308120_CLE_TEX |
| Balor Moore | WAS | -0.69 | 197308100_WAS_SDN |
| Joe Decker | MIN | -0.4 | 197308110_MIN_MIL |
| Steve Stone | CHA | -0.38 | 197308100_CHA_DET |
Based on accumulated WAA for this season up to 1973-08-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 8.77 | Tom Seaver | 203.7 | NYN |
| +005+ | 6.42 | Wayne Twitchell | 172.7 | PHI |
| +006+ | 6.15 | Ken Holtzman | 234.3 | OAK |
| +007+ | 6.11 | Don Sutton | 203 | LAN |
| +010+ | 5.84 | Rick Reuschel | 189 | CHN |
| +011+ | 5.8 | Bert Blyleven | 225 | MIN |
| +012+ | 5.37 | Jim Palmer | 211.7 | BAL |
| +020+ | 4.49 | Fred Beene | 89 | NYA |
| +021+ | 4.48 | Bill Lee | 199.3 | BOS |
| +022+ | 4.42 | Nolan Ryan | 237.3 | ANA |
| +027+ | 4.14 | Ron Bryant | 205.7 | SFN |
| +029+ | 4.01 | Steve Renko | 173.7 | WAS |
| +030+ | 4 | Bob Gibson | 189 | SLN |
| +034+ | 3.7 | Jim Colborn | 223.7 | MIL |
| +035+ | 3.65 | Andy Messersmith | 198.7 | LAN |
| +037+ | 3.54 | Don Wilson | 191.7 | HOU |
| +038+ | 3.44 | Nelson Briles | 164.7 | PIT |
| +040+ | 3.42 | Claude Osteen | 180.7 | LAN |
| +042+ | 3.4 | Terry Forster | 97.7 | CHA |
| +043+ | 3.4 | Steve Rogers | 51 | WAS |
| +045+ | 3.32 | Dock Ellis | 163.3 | PIT |
| +047+ | 3.19 | Rogelio Moret | 89 | BOS |
| +051+ | 3.1 | Ross Grimsley | 174.7 | CIN |
| +056+ | 2.99 | Rick Wise | 187 | SLN |
| +058+ | 2.96 | Bob Reynolds | 83.3 | BAL |
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