| Starter | Tm | Tier | Game |
|---|---|---|---|
| Luis Tiant | CLE | 4.09 | 196806040_CHA_CLE |
| Mike Cuellar | HOU | 3.6 | 196806040_SLN_HOU |
| Don Drysdale | LAN | 3.58 | 196806040_PIT_LAN |
| Jim Bunning | PIT | 2.85 | 196806040_PIT_LAN |
| Gary Peters | CHA | 2.74 | 196806040_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Ray Culp | BOS | -4.27 | 196806050_DET_BOS |
| Sammy Ellis | ANA | -3.71 | 196806040_ANA_BAL |
| Joe Sparma | DET | -2.26 | 196806030_DET_BOS |
| Rich Nye | CHN | -0.63 | 196806050_NYN_CHN |
| Joe Coleman | TEX | -0.55 | 196806040_OAK_TEX |
Based on accumulated WAA for this season up to 1968-06-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 3.87 | Don Drysdale | 104 | LAN |
| +003+ | 3.25 | Luis Tiant | 94.3 | CLE |
| +008+ | 2.72 | Jerry Koosman | 88.3 | NYN |
| +010+ | 2.68 | Woodie Fryman | 91.3 | PHI |
| +011+ | 2.59 | Bob Gibson | 97.7 | SLN |
| +013+ | 2.52 | Tommy John | 76.7 | CHA |
| +014+ | 2.38 | Bill Singer | 97.3 | LAN |
| +016+ | 2.27 | Sam McDowell | 95.3 | CLE |
| +019+ | 2.16 | Stan Williams | 61.7 | CLE |
| +018+ | 2.16 | Joe Horlen | 77.7 | CHA |
| +020+ | 2.11 | Dave Giusti | 90 | HOU |
| +024+ | 1.97 | Pat Jarvis | 94.3 | ATL |
| +026+ | 1.95 | Larry Jaster | 46 | SLN |
| +029+ | 1.85 | Tom Seaver | 101 | NYN |
| +038+ | 1.65 | Ray Sadecki | 89.7 | SFN |
| +040+ | 1.6 | Steve Carlton | 89 | SLN |
| +041+ | 1.6 | Bill Hands | 75.7 | CHN |
| +042+ | 1.58 | Jim Nash | 69 | OAK |
| +045+ | 1.56 | Denny McLain | 103 | DET |
| +046+ | 1.55 | Mel Stottlemyre | 98.7 | NYA |
| +047+ | 1.52 | Tom Phoebus | 82.3 | BAL |
| +050+ | 1.49 | Gerry Arrigo | 85.7 | CIN |
| +055+ | 1.39 | Gary Bell | 63 | BOS |
| +056+ | 1.39 | Dave McNally | 77.3 | BAL |
| +061+ | 1.31 | Camilo Pascual | 56.3 | TEX |
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