| Starter | Tm | Tier | Game |
|---|---|---|---|
| Juan Marichal | SFN | 10.6 | 196505221_SFN_HOU |
| Sandy Koufax | LAN | 7.53 | 196505220_LAN_CHN |
| Gary Peters | CHA | 4.55 | 196505220_CHA_ANA |
| Chris Short | PHI | 4.44 | 196505200_PHI_SLN |
| Camilo Pascual | MIN | 3.46 | 196505210_OAK_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Jackson | NYN | -3.66 | 196505210_NYN_SLN |
| Diego Segui | OAK | -2.23 | 196505210_OAK_MIN |
| Dave Morehead | BOS | -2.04 | 196505220_BOS_CLE |
| Dave Wickersham | DET | -1.57 | 196505210_BAL_DET |
| Pete Richert | TEX | -1.38 | 196505220_TEX_NYA |
Based on accumulated WAA for this season up to 1965-05-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.27 | Juan Marichal | 77.3 | SFN |
| +003+ | 2.76 | Claude Osteen | 73 | LAN |
| +006+ | 2.58 | Sandy Koufax | 73.3 | LAN |
| +007+ | 2.49 | Marcelino Lopez | 68 | ANA |
| +010+ | 2.37 | John Buzhardt | 46.7 | CHA |
| +012+ | 2.24 | Jim Kaat | 68.7 | MIN |
| +014+ | 2.18 | Johnny Podres | 46 | LAN |
| +016+ | 2.13 | Camilo Pascual | 67.3 | MIN |
| +018+ | 2.04 | Bob Gibson | 74.3 | SLN |
| +021+ | 1.93 | Turk Farrell | 48.7 | HOU |
| +023+ | 1.88 | Milt Pappas | 47.3 | BAL |
| +026+ | 1.77 | Joe Horlen | 54.3 | CHA |
| +030+ | 1.61 | Tommy John | 40.3 | CHA |
| +031+ | 1.59 | Jim Maloney | 45.7 | CIN |
| +034+ | 1.53 | Bob Shaw | 29.3 | SFN |
| +035+ | 1.51 | Bob Buhl | 53 | CHN |
| +042+ | 1.36 | Mel Stottlemyre | 61.3 | NYA |
| XXXXX | 1.23 | Dave Boswell | 34.3 | MIN |
| XXXXX | 1.14 | Sonny Siebert | 37.3 | CLE |
| XXXXX | 1.06 | Chris Short | 63.3 | PHI |
| XXXXX | 1.05 | Jim Lonborg | 39 | BOS |
| XXXXX | 1.02 | Ralph Terry | 55.3 | CLE |
| XXXXX | 0.98 | Dave Giusti | 47.3 | HOU |
| XXXXX | 0.98 | Fred Newman | 70 | ANA |
| XXXXX | 0.96 | Jim Brewer | 14 | LAN |
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