| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 8.91 | 196306170_LAN_SFN |
| Jim O'Toole | CIN | 8.12 | 196306162_NYN_CIN |
| Ralph Terry | NYA | 2.92 | 196306161_DET_NYA |
| Larry Jackson | CHN | 2.81 | 196306150_CHN_LAN |
| Juan Pizarro | CHA | 2.49 | 196306162_OAK_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -9.4 | 196306170_NYN_SLN |
| Don Rudolph | TEX | -1.64 | 196306162_TEX_CLE |
| Ryne Duren | PHI | -0.97 | 196306170_PHI_CIN |
| Ike Delock | BAL | -0.8 | 196306161_BAL_BOS |
| Diego Segui | OAK | -0.7 | 196306150_OAK_CHA |
Based on accumulated WAA for this season up to 1963-06-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.85 | Sandy Koufax | 116 | LAN |
| +004+ | 4.42 | Jim O'Toole | 122 | CIN |
| +008+ | 3.85 | Dick Ellsworth | 104.7 | CHN |
| +009+ | 3.44 | Larry Jackson | 120.3 | CHN |
| +010+ | 3.22 | John Buzhardt | 95.3 | CHA |
| +014+ | 2.94 | Bob Friend | 110.3 | PIT |
| +017+ | 2.65 | Juan Pizarro | 98.7 | CHA |
| +018+ | 2.64 | Denny Lemaster | 83.3 | ATL |
| +019+ | 2.61 | Bob Buhl | 115.3 | CHN |
| +021+ | 2.59 | Juan Marichal | 117.7 | SFN |
| +022+ | 2.57 | Jack Sanford | 120 | SFN |
| +023+ | 2.55 | Ernie Broglio | 106.7 | SLN |
| +025+ | 2.52 | Jim Bouton | 87 | NYA |
| +030+ | 2.15 | Camilo Pascual | 105.7 | MIN |
| +033+ | 2.13 | Carl Willey | 87.3 | NYN |
| +035+ | 2.07 | Bobby Bolin | 49 | SFN |
| +036+ | 2.07 | Jack Kralick | 91.3 | TOT |
| +037+ | 2.06 | Don Drysdale | 133.7 | LAN |
| +039+ | 2.05 | Tom Cheney | 96.3 | TEX |
| +042+ | 1.93 | Steve Barber | 117 | BAL |
| +050+ | 1.76 | Don Schwall | 75.3 | PIT |
| +052+ | 1.74 | Al McBean | 62.3 | PIT |
| +053+ | 1.69 | Billy O'Dell | 104 | SFN |
| +057+ | 1.62 | Dallas Green | 40 | PHI |
| +056+ | 1.62 | Turk Farrell | 85.3 | HOU |
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