| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Gibson | SLN | 7.81 | 196806200_CHN_SLN |
| Joe Horlen | CHA | 5.37 | 196806211_BOS_CHA |
| Luis Tiant | CLE | 5.07 | 196806190_CLE_CHA |
| Mike Cuellar | HOU | 2.35 | 196806210_PHI_HOU |
| Bill Singer | LAN | 2.29 | 196806190_LAN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Milt Pappas | ATL | -5.68 | 196806200_CIN_ATL |
| Joe Niekro | CHN | -3.35 | 196806210_CHN_CIN |
| Dick Ellsworth | BOS | -3.27 | 196806200_BOS_DET |
| Joe Sparma | DET | -3.24 | 196806190_BOS_DET |
| Sammy Ellis | ANA | -2.22 | 196806190_NYA_ANA |
Based on accumulated WAA for this season up to 1968-06-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 4.96 | Bob Gibson | 133.7 | SLN |
| +003+ | 4.59 | Don Drysdale | 125.7 | LAN |
| +005+ | 4.31 | Luis Tiant | 118.3 | CLE |
| +007+ | 3.75 | Woodie Fryman | 117.7 | PHI |
| +009+ | 3.42 | Jerry Koosman | 113.3 | NYN |
| +013+ | 3.05 | Bill Singer | 118.3 | LAN |
| +014+ | 3.04 | Sam McDowell | 121.3 | CLE |
| +019+ | 2.81 | Jim Nash | 92.3 | OAK |
| +021+ | 2.7 | Denny McLain | 136 | DET |
| +022+ | 2.39 | Tommy John | 90.3 | CHA |
| +024+ | 2.13 | Johnny Odom | 85.3 | OAK |
| +028+ | 2.01 | Bob Veale | 107.7 | PIT |
| +033+ | 1.95 | Pat Jarvis | 116.3 | ATL |
| +032+ | 1.95 | Stan Williams | 79.7 | CLE |
| +036+ | 1.89 | Dave McNally | 101.7 | BAL |
| +040+ | 1.84 | Chris Short | 114.3 | PHI |
| +043+ | 1.8 | Mike Cuellar | 64.3 | HOU |
| +044+ | 1.79 | Larry Jaster | 66 | SLN |
| +045+ | 1.78 | Tom Seaver | 123.7 | NYN |
| +048+ | 1.75 | Mel Stottlemyre | 122.7 | NYA |
| +049+ | 1.73 | Stan Bahnsen | 94.3 | NYA |
| +050+ | 1.72 | Ferguson Jenkins | 119.7 | CHN |
| +052+ | 1.7 | Dick Selma | 71 | NYN |
| +053+ | 1.66 | Jose Santiago | 105.7 | BOS |
| +058+ | 1.6 | Jim Hardin | 91.3 | BAL |
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