| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Messersmith | LAN | 7.55 | 197505210_CHN_LAN |
| Tom Seaver | NYN | 6.84 | 197505210_NYN_CIN |
| Jim Palmer | BAL | 6.06 | 197505210_BAL_CHA |
| Ken Holtzman | OAK | 5.78 | 197505210_OAK_BOS |
| Phil Niekro | ATL | 2.53 | 197505210_WAS_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Burt Hooton | LAN | -2.14 | 197505220_CHN_LAN |
| J.R. Richard | HOU | -1.95 | 197505200_PHI_HOU |
| Paul Splittorff | KCA | -1.91 | 197505200_KCA_NYA |
| Mickey Lolich | DET | -1.5 | 197505200_DET_MIN |
| Roric Harrison | ATL | -1.38 | 197505200_WAS_ATL |
Based on accumulated WAA for this season up to 1975-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.87 | Don Sutton | 90.7 | LAN |
| +002+ | 3.34 | Andy Messersmith | 92 | LAN |
| +003+ | 3.33 | Jim Palmer | 76.7 | BAL |
| +004+ | 3.11 | Joe McIntosh | 63.7 | SDN |
| +005+ | 2.88 | Nolan Ryan | 73.7 | ANA |
| +009+ | 2.71 | Steve Stone | 44.3 | CHN |
| +010+ | 2.65 | Jim Lonborg | 66.7 | PHI |
| +011+ | 2.59 | Randy Jones | 65 | SDN |
| +013+ | 2.21 | Tom Seaver | 68.7 | NYN |
| +014+ | 2.21 | Jim Hughes | 41.3 | MIN |
| +016+ | 2.11 | Vida Blue | 82.7 | OAK |
| +017+ | 2.01 | Bill Hands | 55.7 | TEX |
| +018+ | 2 | Jim Kern | 49 | CLE |
| +020+ | 1.9 | Steve Busby | 83.3 | KCA |
| +021+ | 1.88 | Don Gullett | 71.3 | CIN |
| +025+ | 1.74 | Jim Barr | 64.7 | SFN |
| +027+ | 1.66 | Phil Niekro | 72 | ATL |
| +029+ | 1.65 | Jim Kaat | 72 | CHA |
| +030+ | 1.55 | Tom Underwood | 56 | PHI |
| +031+ | 1.47 | Frank Tanana | 43.7 | ANA |
| +035+ | 1.42 | Ken Holtzman | 77 | OAK |
| +038+ | 1.34 | Mike Norris | 16 | OAK |
| XXXXX | 1.17 | Woodie Fryman | 46 | WAS |
| XXXXX | 1.13 | Pat Dobson | 60.7 | NYA |
| XXXXX | 1.11 | Pete Broberg | 68 | MIL |
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