| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.18 | 196407010_PHI_LAN |
| Whitey Ford | NYA | 9.94 | 196407010_OAK_NYA |
| Juan Marichal | SFN | 4.87 | 196407010_PIT_SFN |
| Dean Chance | ANA | 4.44 | 196407010_ANA_BAL |
| Chris Short | PHI | 4.27 | 196407020_PHI_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -3.46 | 196406300_OAK_BOS |
| Mudcat Grant | MIN | -3.22 | 196407010_MIN_BOS |
| Tracy Stallard | NYN | -1.54 | 196407010_NYN_HOU |
| Ray Sadecki | SLN | -1.36 | 196407020_SLN_ATL |
| Dave Morehead | BOS | -1.33 | 196406300_OAK_BOS |
Based on accumulated WAA for this season up to 1964-07-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 5.05 | Sandy Koufax | 131.7 | LAN |
| +005+ | 4.95 | Don Drysdale | 153.7 | LAN |
| +006+ | 4.7 | Whitey Ford | 140.3 | NYA |
| +007+ | 4.4 | Chris Short | 91 | PHI |
| +009+ | 4.34 | Jim Bunning | 124.7 | PHI |
| +011+ | 4.17 | Dean Chance | 109.7 | ANA |
| +013+ | 3.73 | Juan Marichal | 143.3 | SFN |
| +018+ | 3.21 | Juan Pizarro | 106.7 | CHA |
| +022+ | 3.12 | Jim Maloney | 117 | CIN |
| +023+ | 3.12 | Bob Gibson | 116.3 | SLN |
| +024+ | 2.95 | Ron Herbel | 85 | SFN |
| +029+ | 2.79 | Dick Ellsworth | 144.7 | CHN |
| +036+ | 2.59 | Gaylord Perry | 60 | SFN |
| +035+ | 2.59 | Gary Peters | 111.7 | CHA |
| +039+ | 2.54 | Robin Roberts | 110.3 | BAL |
| +044+ | 2.32 | Jack Kralick | 109.7 | CLE |
| +049+ | 2.05 | Roger Craig | 89.3 | SLN |
| +053+ | 2.01 | Dave Wickersham | 125.3 | DET |
| +056+ | 1.96 | Claude Osteen | 111.3 | TEX |
| +067+ | 1.77 | Ken Johnson | 119 | HOU |
| +066+ | 1.77 | Joe Horlen | 75 | CHA |
| +069+ | 1.74 | Jim Bouton | 121.7 | NYA |
| +074+ | 1.67 | Joe Gibbon | 65.7 | PIT |
| +077+ | 1.63 | Tony Cloninger | 99.3 | ATL |
| +079+ | 1.59 | Curt Simmons | 115.7 | SLN |
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