| Starter | Tm | Tier | Game |
|---|---|---|---|
| Nolan Ryan | ANA | 8.38 | 197505180_ANA_BAL |
| Don Sutton | LAN | 6.34 | 197505200_CHN_LAN |
| Gaylord Perry | CLE | 4.1 | 197505180_CLE_CHA |
| Vida Blue | OAK | 4 | 197505200_OAK_BOS |
| Jim Hunter | NYA | 2.98 | 197505180_OAK_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Stan Bahnsen | CHA | -4.2 | 197505190_BAL_CHA |
| Joe Coleman | DET | -1.98 | 197505190_DET_MIN |
| J.R. Richard | HOU | -1.95 | 197505200_PHI_HOU |
| Paul Splittorff | KCA | -1.91 | 197505200_KCA_NYA |
| Burt Hooton | LAN | -1.57 | 197505180_PIT_LAN |
Based on accumulated WAA for this season up to 1975-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.89 | Don Sutton | 90.7 | LAN |
| +002+ | 3.02 | Jim Palmer | 67.7 | BAL |
| +003+ | 2.89 | Nolan Ryan | 73.7 | ANA |
| +006+ | 2.71 | Steve Stone | 44.3 | CHN |
| +007+ | 2.66 | Jim Lonborg | 66.7 | PHI |
| +008+ | 2.64 | Andy Messersmith | 83 | LAN |
| +009+ | 2.61 | Randy Jones | 65 | SDN |
| +011+ | 2.46 | Tom Seaver | 64 | NYN |
| +012+ | 2.39 | Joe McIntosh | 54.7 | SDN |
| +013+ | 2.37 | Ken Holtzman | 70.7 | OAK |
| +014+ | 2.25 | Jim Hughes | 41.3 | MIN |
| +015+ | 2.12 | Vida Blue | 82.7 | OAK |
| +018+ | 1.96 | Steve Busby | 83.3 | KCA |
| +019+ | 1.9 | Don Gullett | 71.3 | CIN |
| +021+ | 1.82 | Jim Kern | 41.7 | CLE |
| +022+ | 1.71 | Jim Barr | 63.7 | SFN |
| +024+ | 1.56 | Tom Underwood | 56 | PHI |
| +031+ | 1.42 | Jim Kaat | 66.3 | CHA |
| +036+ | 1.35 | Mike Norris | 16 | OAK |
| +038+ | 1.29 | Bill Hands | 46.7 | TEX |
| +039+ | 1.25 | Steve Hargan | 43.7 | TEX |
| XXXXX | 1.24 | Frank Tanana | 35.7 | ANA |
| XXXXX | 1.18 | Woodie Fryman | 46 | WAS |
| XXXXX | 1.17 | Pat Dobson | 60.7 | NYA |
| XXXXX | 1.14 | Phil Niekro | 63 | ATL |
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