| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dean Chance | ANA | 10.61 | 196409020_NYA_ANA |
| Don Drysdale | LAN | 6.98 | 196409041_LAN_NYN |
| Chris Short | PHI | 5.48 | 196409020_HOU_PHI |
| Juan Pizarro | CHA | 5.34 | 196409040_CLE_CHA |
| Whitey Ford | NYA | 4.93 | 196409040_NYA_OAK |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Moe Drabowsky | OAK | -3.8 | 196409030_BOS_OAK |
| Bill Monbouquette | BOS | -3.33 | 196409020_BOS_OAK |
| Ken McBride | ANA | -2.33 | 196409030_NYA_ANA |
| Lee Stange | CLE | -1.43 | 196409020_CLE_TEX |
| Jack Fisher | NYN | -1.23 | 196409030_SFN_NYN |
Based on accumulated WAA for this season up to 1964-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.55 | Dean Chance | 228.7 | ANA |
| +002+ | 9.32 | Sandy Koufax | 223 | LAN |
| +005+ | 7.67 | Don Drysdale | 269.3 | LAN |
| +007+ | 7.55 | Jim Bunning | 224.7 | PHI |
| +008+ | 7.28 | Juan Pizarro | 213.7 | CHA |
| +010+ | 6.97 | Chris Short | 170.3 | PHI |
| +015+ | 6.12 | Gary Peters | 230 | CHA |
| +019+ | 5.88 | Whitey Ford | 202.3 | NYA |
| +023+ | 5.23 | Juan Marichal | 207.7 | SFN |
| +026+ | 5.01 | Jim O'Toole | 176.3 | CIN |
| +027+ | 4.85 | Joe Horlen | 151.7 | CHA |
| +030+ | 4.58 | Jim Bouton | 233 | NYA |
| +031+ | 4.54 | Milt Pappas | 200 | BAL |
| +046+ | 3.56 | Bob Veale | 227.3 | PIT |
| +050+ | 3.33 | Wally Bunker | 168 | BAL |
| +054+ | 3.19 | Don Larsen | 89 | TOT |
| +057+ | 3.11 | Gaylord Perry | 151.7 | SFN |
| +060+ | 3 | Bob Bruce | 169.7 | HOU |
| +065+ | 2.82 | Robin Roberts | 182 | BAL |
| +073+ | 2.56 | Bob Miller | 115.3 | LAN |
| +076+ | 2.52 | Tony Cloninger | 201.3 | ATL |
| +080+ | 2.42 | Steve Ridzik | 105 | TEX |
| +081+ | 2.41 | Claude Osteen | 216 | TEX |
| +083+ | 2.34 | Ron Herbel | 155 | SFN |
| +088+ | 2.22 | Jim Maloney | 175.7 | CIN |
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