| Starter | Tm | Tier | Game |
|---|---|---|---|
| Whitey Ford | NYA | 10.77 | 196405220_ANA_NYA |
| Don Drysdale | LAN | 7.26 | 196405220_PHI_LAN |
| Juan Pizarro | CHA | 4.57 | 196405220_TEX_CHA |
| Bob Shaw | SFN | 3.57 | 196405242_PIT_SFN |
| Jim Maloney | CIN | 3.3 | 196405230_CHN_CIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Owens | HOU | -2.07 | 196405231_NYN_HOU |
| Galen Cisco | NYN | -1.31 | 196405231_NYN_HOU |
| Aurelio Monteagudo | OAK | -1.17 | 196405230_OAK_BOS |
| Dave McNally | BAL | -0.73 | 196405230_MIN_BAL |
| Phil Regan | DET | -0.7 | 196405230_DET_CLE |
Based on accumulated WAA for this season up to 1964-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.97 | Jack Kralick | 55 | CLE |
| +003+ | 2.86 | Juan Pizarro | 46.7 | CHA |
| +004+ | 2.73 | Robin Roberts | 67 | BAL |
| +006+ | 2.65 | Chris Short | 32.7 | PHI |
| +008+ | 2.64 | Whitey Ford | 68 | NYA |
| +009+ | 2.58 | Don Drysdale | 77.7 | LAN |
| +014+ | 2.28 | Jim Bunning | 59.7 | PHI |
| +017+ | 2.12 | Bob Gibson | 58 | SLN |
| +019+ | 2.11 | Juan Marichal | 72.3 | SFN |
| +021+ | 2.08 | Turk Farrell | 58.3 | HOU |
| +022+ | 2.04 | Curt Simmons | 64.3 | SLN |
| +023+ | 2.01 | Dennis Bennett | 71 | PHI |
| +024+ | 1.99 | Phil Ortega | 58.3 | LAN |
| +025+ | 1.91 | Bob Bruce | 46.7 | HOU |
| +027+ | 1.88 | Jim Maloney | 57 | CIN |
| +034+ | 1.62 | Ken Johnson | 67.7 | HOU |
| +035+ | 1.6 | Dean Chance | 40 | ANA |
| +036+ | 1.57 | Bob Lee | 42 | ANA |
| +038+ | 1.51 | Dave Wickersham | 64.3 | DET |
| +039+ | 1.45 | Al Jackson | 63.3 | NYN |
| +043+ | 1.41 | Wally Bunker | 34 | BAL |
| +046+ | 1.37 | John Buzhardt | 39.3 | CHA |
| +051+ | 1.31 | Sandy Koufax | 57.7 | LAN |
| XXXXX | 1.16 | Tony Cloninger | 46.3 | ATL |
| XXXXX | 1 | Roger Craig | 50 | SLN |
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