| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Gibson | SLN | 6.31 | 196805220_LAN_SLN |
| Jim Bunning | PIT | 6.22 | 196805220_PIT_CHN |
| Tommy John | CHA | 6.05 | 196805240_CHA_NYA |
| Sonny Siebert | CLE | 3.56 | 196805230_CLE_ANA |
| Gaylord Perry | SFN | 1.76 | 196805230_SFN_ATL |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Culp | BOS | -4.87 | 196805240_BOS_MIN |
| Sammy Ellis | ANA | -4.04 | 196805230_CLE_ANA |
| Joe Niekro | CHN | -1.41 | 196805220_PIT_CHN |
| Dave Giusti | HOU | -1.24 | 196805220_HOU_CIN |
| Frank Bertaina | TEX | -1.06 | 196805220_CHA_TEX |
Based on accumulated WAA for this season up to 1968-05-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.68 | Bob Gibson | 80.7 | SLN |
| +004+ | 2.51 | Luis Tiant | 67.3 | CLE |
| +005+ | 2.46 | Tommy John | 68.7 | CHA |
| +007+ | 2.15 | Dave Giusti | 75 | HOU |
| +009+ | 2.03 | Don Drysdale | 77 | LAN |
| +010+ | 1.99 | Ray Sadecki | 74 | SFN |
| +012+ | 1.95 | Bob Veale | 66 | PIT |
| +016+ | 1.86 | Stan Williams | 41.3 | CLE |
| +017+ | 1.83 | Gerry Arrigo | 64 | CIN |
| +022+ | 1.69 | Pat Jarvis | 79.3 | ATL |
| +024+ | 1.67 | Jerry Koosman | 63.7 | NYN |
| +025+ | 1.64 | Sam McDowell | 73.3 | CLE |
| +027+ | 1.59 | Bill Singer | 80 | LAN |
| +029+ | 1.58 | Tom Seaver | 79 | NYN |
| +034+ | 1.44 | Jose Santiago | 64.7 | BOS |
| +037+ | 1.41 | Tom Phoebus | 69.3 | BAL |
| +040+ | 1.29 | Dick Selma | 34 | NYN |
| +041+ | 1.26 | Joe Horlen | 53.7 | CHA |
| XXXXX | 1.23 | Sonny Siebert | 76.7 | CLE |
| XXXXX | 1.13 | George Brunet | 70 | ANA |
| XXXXX | 1.08 | Joe Coleman | 53.7 | TEX |
| XXXXX | 1.07 | Stan Bahnsen | 57.3 | NYA |
| XXXXX | 1.06 | Woodie Fryman | 64.3 | PHI |
| XXXXX | 1.06 | Les Cain | 19.3 | DET |
| XXXXX | 1.03 | Chuck Dobson | 64 | OAK |
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