| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.65 | 196306210_LAN_SLN |
| Jim O'Toole | CIN | 8.73 | 196306200_PHI_CIN |
| Bob Friend | PIT | 5.5 | 196306220_PIT_CHN |
| Whitey Ford | NYA | 4.9 | 196306221_NYA_BOS |
| Juan Pizarro | CHA | 2.72 | 196306210_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Craig | NYN | -3.04 | 196306220_PHI_NYN |
| Don Rudolph | TEX | -1.59 | 196306210_TEX_ANA |
| Ike Delock | BAL | -0.96 | 196306211_BAL_MIN |
| Arnold Earley | BOS | -0.75 | 196306200_DET_BOS |
| Phil Regan | DET | -0.58 | 196306220_DET_OAK |
Based on accumulated WAA for this season up to 1963-06-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.97 | Sandy Koufax | 124.7 | LAN |
| +003+ | 4.83 | Jim O'Toole | 130 | CIN |
| +006+ | 4.44 | Dick Ellsworth | 120 | CHN |
| +008+ | 4.15 | Larry Jackson | 129.3 | CHN |
| +009+ | 4.01 | Bob Friend | 126 | PIT |
| +012+ | 3.41 | Juan Pizarro | 107.7 | CHA |
| +014+ | 3.14 | Denny Lemaster | 92.3 | ATL |
| +015+ | 3.01 | Juan Marichal | 125.3 | SFN |
| +017+ | 2.89 | John Buzhardt | 98.7 | CHA |
| +020+ | 2.78 | Jim Bouton | 95.3 | NYA |
| +024+ | 2.68 | Jack Sanford | 129 | SFN |
| +028+ | 2.57 | Ray Culp | 107.3 | PHI |
| +029+ | 2.55 | Ernie Broglio | 106.7 | SLN |
| +031+ | 2.43 | Billy O'Dell | 113 | SFN |
| +034+ | 2.29 | Earl Wilson | 105 | BOS |
| +035+ | 2.25 | Bobby Bolin | 53.7 | SFN |
| +036+ | 2.19 | Don Schwall | 80.7 | PIT |
| +039+ | 2.14 | Camilo Pascual | 105.7 | MIN |
| +041+ | 2.08 | Jack Kralick | 91.3 | TOT |
| +044+ | 2.06 | Steve Barber | 123 | BAL |
| +046+ | 2.03 | Bob Buhl | 121.3 | CHN |
| +055+ | 1.77 | Al McBean | 65.3 | PIT |
| +059+ | 1.67 | Turk Farrell | 85.3 | HOU |
| +060+ | 1.65 | Milt Pappas | 82 | BAL |
| +062+ | 1.63 | Don Drysdale | 138 | LAN |
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