| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Messersmith | LAN | 8.78 | 197505260_LAN_NYN |
| Nolan Ryan | ANA | 8.01 | 197505280_CLE_ANA |
| Bert Blyleven | MIN | 7.63 | 197505270_MIN_DET |
| Tom Seaver | NYN | 6.44 | 197505260_LAN_NYN |
| Ken Holtzman | OAK | 3.95 | 197505260_BAL_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stan Bahnsen | CHA | -4.59 | 197505280_CHA_MIL |
| Joe Coleman | DET | -2.73 | 197505280_MIN_DET |
| Fritz Peterson | CLE | -2.53 | 197505260_CLE_ANA |
| Burt Hooton | LAN | -2.23 | 197505270_LAN_NYN |
| Jim Slaton | MIL | -1.87 | 197505280_CHA_MIL |
Based on accumulated WAA for this season up to 1975-05-28.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.24 | Don Sutton | 98.7 | LAN |
| +002+ | 3.38 | Randy Jones | 74 | SDN |
| +003+ | 3.28 | Jim Palmer | 82 | BAL |
| +005+ | 3.04 | Jim Lonborg | 73.7 | PHI |
| +006+ | 2.96 | Andy Messersmith | 101 | LAN |
| +007+ | 2.94 | Jim Hughes | 59.3 | MIN |
| +011+ | 2.77 | Steve Stone | 44.3 | CHN |
| +012+ | 2.7 | Joe McIntosh | 68.3 | SDN |
| +015+ | 2.48 | Steve Busby | 92.3 | KCA |
| +016+ | 2.41 | Tom Seaver | 77.7 | NYN |
| +019+ | 2.23 | Tom Underwood | 64 | PHI |
| +020+ | 2.1 | Bill Hands | 55.7 | TEX |
| +021+ | 2.09 | Phil Niekro | 81 | ATL |
| +022+ | 2.04 | Jim Kaat | 80.3 | CHA |
| +023+ | 2.03 | Vida Blue | 93.7 | OAK |
| +025+ | 1.97 | Dennis Eckersley | 23.3 | CLE |
| +026+ | 1.91 | Gary Nolan | 76.3 | CIN |
| +027+ | 1.89 | Jim Barr | 73.7 | SFN |
| +031+ | 1.76 | Nolan Ryan | 86.7 | ANA |
| +033+ | 1.7 | Don Gullett | 76.3 | CIN |
| +042+ | 1.48 | Woodie Fryman | 54 | WAS |
| +045+ | 1.47 | John Montefusco | 58.3 | SFN |
| +044+ | 1.47 | Jim Kern | 54.7 | CLE |
| +051+ | 1.36 | Bruce Kison | 59.3 | PIT |
| +057+ | 1.29 | Gaylord Perry | 97.3 | CLE |
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