| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 9.56 | 196306090_LAN_CHN |
| Whitey Ford | NYA | 5.53 | 196306090_NYA_DET |
| Jim O'Toole | CIN | 5.48 | 196306080_CIN_PHI |
| Warren Spahn | ATL | 4.05 | 196306092_ATL_PIT |
| Bob Friend | PIT | 4.01 | 196306091_ATL_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -8.22 | 196306092_SLN_NYN |
| Ray Sadecki | SLN | -3.84 | 196306092_SLN_NYN |
| Ted Bowsfield | OAK | -1.82 | 196306080_CHA_OAK |
| Sam McDowell | CLE | -1.22 | 196306090_CLE_TEX |
| Bennie Daniels | TEX | -1.16 | 196306080_CLE_TEX |
Based on accumulated WAA for this season up to 1963-06-09.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 3.49 | Dick Ellsworth | 95.3 | CHN |
| +006+ | 3.46 | Larry Jackson | 105.3 | CHN |
| +008+ | 3.41 | Sandy Koufax | 98 | LAN |
| +009+ | 3.14 | Jim O'Toole | 103.7 | CIN |
| +010+ | 3.05 | Bob Friend | 104 | PIT |
| +011+ | 3 | Denny Lemaster | 75 | ATL |
| +017+ | 2.68 | Juan Pizarro | 83.3 | CHA |
| +019+ | 2.55 | Bob Buhl | 99.3 | CHN |
| +022+ | 2.25 | Steve Barber | 111 | BAL |
| +025+ | 2.2 | John Buzhardt | 77.3 | CHA |
| +028+ | 2.13 | Jack Sanford | 111.7 | SFN |
| +032+ | 2.06 | Don Schwall | 63.7 | PIT |
| +033+ | 2 | Ernie Broglio | 92 | SLN |
| +034+ | 1.92 | Carl Willey | 80 | NYN |
| +037+ | 1.9 | Milt Pappas | 67.7 | BAL |
| +036+ | 1.9 | Tom Cheney | 88.7 | TEX |
| +038+ | 1.86 | Jim Bouton | 71 | NYA |
| +039+ | 1.81 | Camilo Pascual | 100.7 | MIN |
| +049+ | 1.57 | Turk Farrell | 85.3 | HOU |
| +050+ | 1.54 | Don Drysdale | 116.7 | LAN |
| +053+ | 1.49 | Ray Culp | 77.3 | PHI |
| +056+ | 1.47 | Ken McBride | 108.7 | ANA |
| +057+ | 1.45 | Whitey Ford | 89 | NYA |
| +060+ | 1.36 | Bobby Bolin | 32.3 | SFN |
| +063+ | 1.34 | Dallas Green | 34.3 | PHI |
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