| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 5.7 | 196505210_LAN_CHN |
| Chris Short | PHI | 4.44 | 196505200_PHI_SLN |
| Jim Maloney | CIN | 3.62 | 196505190_PIT_CIN |
| Camilo Pascual | MIN | 3.46 | 196505210_OAK_MIN |
| Milt Pappas | BAL | 2.23 | 196505210_BAL_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Jackson | NYN | -3.66 | 196505210_NYN_SLN |
| Diego Segui | OAK | -2.23 | 196505210_OAK_MIN |
| Dave Wickersham | DET | -1.57 | 196505210_BAL_DET |
| Art Mahaffey | PHI | -1.34 | 196505210_PHI_CIN |
| Earl Wilson | BOS | -1.19 | 196505210_BOS_CLE |
Based on accumulated WAA for this season up to 1965-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.45 | Juan Marichal | 68.3 | SFN |
| +003+ | 2.74 | Claude Osteen | 73 | LAN |
| +004+ | 2.53 | Marcelino Lopez | 61.3 | ANA |
| +006+ | 2.5 | Jim Kaat | 64.3 | MIN |
| +010+ | 2.34 | John Buzhardt | 46.7 | CHA |
| +013+ | 2.17 | Johnny Podres | 46 | LAN |
| +015+ | 2.12 | Camilo Pascual | 67.3 | MIN |
| +017+ | 2.02 | Bob Gibson | 74.3 | SLN |
| +016+ | 2.02 | Sandy Koufax | 64.3 | LAN |
| +022+ | 1.85 | Milt Pappas | 47.3 | BAL |
| +025+ | 1.76 | Turk Farrell | 41.7 | HOU |
| +026+ | 1.74 | Joe Horlen | 54.3 | CHA |
| +030+ | 1.59 | Tommy John | 40.3 | CHA |
| +031+ | 1.58 | Jim Maloney | 45.7 | CIN |
| +034+ | 1.54 | Ralph Terry | 51.7 | CLE |
| +035+ | 1.51 | Bob Shaw | 29.3 | SFN |
| +036+ | 1.49 | Bob Buhl | 53 | CHN |
| +040+ | 1.34 | Mel Stottlemyre | 61.3 | NYA |
| XXXXX | 1.23 | Robin Roberts | 60 | BAL |
| XXXXX | 1.22 | Dave Boswell | 34.3 | MIN |
| XXXXX | 1.22 | Jack Fisher | 57 | NYN |
| XXXXX | 1.13 | Sonny Siebert | 37.3 | CLE |
| XXXXX | 1.04 | Jim Lonborg | 39 | BOS |
| XXXXX | 1.03 | Chris Short | 63.3 | PHI |
| XXXXX | 0.97 | Fred Newman | 70 | ANA |
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