| Starter | Tm | Tier | Game |
|---|---|---|---|
| Don Drysdale | LAN | 6.98 | 196409041_LAN_NYN |
| Jim Bunning | PHI | 6.95 | 196409050_SFN_PHI |
| Juan Pizarro | CHA | 5.34 | 196409040_CLE_CHA |
| Whitey Ford | NYA | 4.93 | 196409040_NYA_OAK |
| Juan Marichal | SFN | 3.19 | 196409060_SFN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Lamabe | BOS | -4.58 | 196409050_BOS_MIN |
| Dick Donovan | CLE | -1.47 | 196409062_CLE_CHA |
| John O'Donoghue | OAK | -1.08 | 196409040_NYA_OAK |
| Denny Lemaster | ATL | -1.03 | 196409060_ATL_CIN |
| Art Mahaffey | PHI | -0.98 | 196409040_SFN_PHI |
Based on accumulated WAA for this season up to 1964-09-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.52 | Dean Chance | 228.7 | ANA |
| +002+ | 9.3 | Sandy Koufax | 223 | LAN |
| +006+ | 7.64 | Jim Bunning | 233.7 | PHI |
| +005+ | 7.64 | Don Drysdale | 269.3 | LAN |
| +008+ | 7.19 | Juan Pizarro | 213.7 | CHA |
| +010+ | 6.72 | Chris Short | 172.7 | PHI |
| +013+ | 6.32 | Gary Peters | 238.7 | CHA |
| +020+ | 5.86 | Whitey Ford | 202.3 | NYA |
| +023+ | 5.34 | Juan Marichal | 216.7 | SFN |
| +024+ | 5.3 | Milt Pappas | 209.3 | BAL |
| +026+ | 5.11 | Joe Horlen | 160.7 | CHA |
| +027+ | 4.99 | Jim O'Toole | 176.3 | CIN |
| +034+ | 4.56 | Jim Bouton | 233 | NYA |
| +048+ | 3.53 | Bob Veale | 227.3 | PIT |
| +053+ | 3.32 | Wally Bunker | 168 | BAL |
| +055+ | 3.19 | Don Larsen | 89 | TOT |
| +057+ | 3.11 | Gaylord Perry | 151.7 | SFN |
| +060+ | 2.99 | Bob Bruce | 169.7 | HOU |
| +066+ | 2.84 | Bob Purkey | 170.7 | CIN |
| +067+ | 2.81 | Robin Roberts | 182 | BAL |
| +072+ | 2.73 | Mickey Lolich | 195.3 | DET |
| +079+ | 2.52 | Tony Cloninger | 201.3 | ATL |
| +082+ | 2.4 | Steve Ridzik | 105 | TEX |
| +084+ | 2.38 | Claude Osteen | 216 | TEX |
| +086+ | 2.33 | Ron Herbel | 155 | SFN |
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