| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Gibson | SLN | 16.67 | 196808190_SLN_PHI |
| Luis Tiant | CLE | 7.78 | 196808190_BOS_CLE |
| Juan Marichal | SFN | 6.63 | 196808170_SFN_PHI |
| Dave McNally | BAL | 3.16 | 196808170_BAL_MIN |
| Tommy John | CHA | 2.96 | 196808181_CHA_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tony Cloninger | CIN | -3.54 | 196808170_CIN_CHN |
| Joe Niekro | CHN | -3.24 | 196808182_CIN_CHN |
| Jim Hunter | OAK | -2.3 | 196808170_NYA_OAK |
| Rick Wise | PHI | -1.92 | 196808170_SFN_PHI |
| Ray Culp | BOS | -1.22 | 196808170_DET_BOS |
Based on accumulated WAA for this season up to 1968-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 10.47 | Bob Gibson | 234.7 | SLN |
| +003+ | 6.86 | Luis Tiant | 222.7 | CLE |
| +006+ | 6.27 | Denny McLain | 255.3 | DET |
| +007+ | 5.9 | Don Drysdale | 228.3 | LAN |
| +009+ | 5.74 | Sam McDowell | 197 | CLE |
| +010+ | 5.64 | Jerry Koosman | 209 | NYN |
| +011+ | 5.49 | Juan Marichal | 264.7 | SFN |
| +013+ | 5.05 | Dave McNally | 200 | BAL |
| +018+ | 4.49 | Tom Seaver | 210.7 | NYN |
| +023+ | 4.05 | Stan Bahnsen | 188.3 | NYA |
| +024+ | 4.01 | Tommy John | 175 | CHA |
| +025+ | 3.98 | Bob Veale | 194.3 | PIT |
| +026+ | 3.91 | Bobby Bolin | 117.3 | SFN |
| +030+ | 3.69 | Jim Nash | 172.3 | OAK |
| +034+ | 3.52 | Tom Phoebus | 184.3 | BAL |
| +037+ | 3.41 | Jim Hardin | 194.7 | BAL |
| +038+ | 3.39 | Dean Chance | 224 | MIN |
| +043+ | 3.06 | Woodie Fryman | 190.3 | PHI |
| +052+ | 2.69 | Wilbur Wood | 122 | CHA |
| +053+ | 2.65 | Nelson Briles | 193.7 | SLN |
| +057+ | 2.36 | Gaylord Perry | 213.3 | SFN |
| +068+ | 2.08 | Vicente Romo | 61 | TOT |
| +070+ | 1.94 | Bob Moose | 127.3 | PIT |
| +071+ | 1.94 | Tom Murphy | 99.3 | ANA |
| +073+ | 1.91 | Pat Jarvis | 196.3 | ATL |
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