| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 8.6 | 196505300_CIN_LAN |
| Juan Marichal | SFN | 8.01 | 196506010_SLN_SFN |
| Jim Maloney | CIN | 4.41 | 196505311_CIN_LAN |
| Bob Veale | PIT | 4.13 | 196506010_PHI_PIT |
| Gary Peters | CHA | 3.47 | 196505300_NYA_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Al Jackson | NYN | -4.82 | 196505301_PIT_NYN |
| Ray Sadecki | SLN | -3.2 | 196506010_SLN_SFN |
| Earl Wilson | BOS | -2.28 | 196505311_ANA_BOS |
| Art Mahaffey | PHI | -1.8 | 196506010_PHI_PIT |
| Diego Segui | OAK | -1.4 | 196505312_OAK_TEX |
Based on accumulated WAA for this season up to 1965-06-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.43 | Jim Kaat | 84.7 | MIN |
| +004+ | 3.12 | Juan Marichal | 89 | SFN |
| +006+ | 3.08 | Sandy Koufax | 90.3 | LAN |
| +007+ | 3 | Johnny Podres | 64 | LAN |
| +009+ | 2.83 | Bob Gibson | 92 | SLN |
| +010+ | 2.83 | Marcelino Lopez | 81 | ANA |
| +012+ | 2.58 | Turk Farrell | 59.3 | HOU |
| +015+ | 2.32 | Joe Horlen | 66.3 | CHA |
| +021+ | 2.02 | Camilo Pascual | 78 | MIN |
| +024+ | 1.91 | Jim Maloney | 61 | CIN |
| +026+ | 1.89 | Don Drysdale | 93.7 | LAN |
| +029+ | 1.84 | Bob Veale | 80 | PIT |
| +031+ | 1.81 | Milt Pappas | 59 | BAL |
| +034+ | 1.72 | Dave Boswell | 40 | MIN |
| +036+ | 1.71 | George Brunet | 36.7 | ANA |
| +038+ | 1.66 | Vern Law | 51 | PIT |
| +048+ | 1.5 | Wade Blasingame | 66 | ATL |
| +051+ | 1.49 | Mel Stottlemyre | 80.3 | NYA |
| +050+ | 1.49 | Ralph Terry | 63.3 | CLE |
| +052+ | 1.48 | Jim Lonborg | 54.3 | BOS |
| +057+ | 1.43 | Sonny Siebert | 48 | CLE |
| +061+ | 1.3 | Billy O'Dell | 39.3 | ATL |
| +063+ | 1.28 | Bobby Bolin | 34 | SFN |
| XXXXX | 1.24 | Fred Newman | 82 | ANA |
| XXXXX | 1.17 | Claude Osteen | 90 | LAN |
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