| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Turley | NYA | 5.03 | 195809170_NYA_DET |
| Warren Spahn | ATL | 3.51 | 195809170_ATL_SLN |
| Frank Lary | DET | 3.06 | 195809160_NYA_DET |
| Billy O'Dell | BAL | 2.7 | 195809160_BAL_CHA |
| Dick Donovan | CHA | 2.16 | 195809160_BAL_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Drott | CHN | -4.52 | 195809160_CHN_PHI |
| Sandy Koufax | LAN | -1.07 | 195809162_LAN_CIN |
| Tom Acker | CIN | -0.6 | 195809162_LAN_CIN |
| Bob Mabe | SLN | -0.32 | 195809160_SLN_PIT |
| Ned Garver | OAK | -0.1 | 195809172_BOS_OAK |
Based on accumulated WAA for this season up to 1958-09-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.64 | Whitey Ford | 206.3 | NYA |
| +008+ | 6.47 | Bob Turley | 242.7 | NYA |
| +011+ | 6.24 | Billy Pierce | 228 | CHA |
| +012+ | 6.05 | Sam Jones | 234.7 | SLN |
| +016+ | 5.74 | Red Witt | 106 | PIT |
| +019+ | 5.62 | Jack Harshman | 214.7 | BAL |
| +018+ | 5.62 | Frank Lary | 241 | DET |
| +020+ | 5.31 | Lew Burdette | 260.3 | ATL |
| +021+ | 5.23 | Warren Spahn | 278 | ATL |
| +022+ | 5.06 | Stu Miller | 163.3 | SFN |
| +025+ | 4.79 | Billy O'Dell | 221.7 | BAL |
| +027+ | 4.56 | Dick Donovan | 235 | CHA |
| +031+ | 4.19 | Carl Willey | 132 | ATL |
| +032+ | 3.96 | Joey Jay | 97 | ATL |
| +033+ | 3.88 | Cal McLish | 205.7 | CLE |
| +039+ | 3.48 | Robin Roberts | 251.3 | PHI |
| +041+ | 3.38 | Juan Pizarro | 83.7 | ATL |
| +042+ | 3.3 | Johnny Antonelli | 232.3 | SFN |
| +043+ | 3.29 | Hoyt Wilhelm | 113 | TOT |
| +046+ | 3.17 | Gary Bell | 163 | CLE |
| +050+ | 3.02 | Ryne Duren | 70.3 | NYA |
| +059+ | 2.6 | Arnie Portocarrero | 190.7 | BAL |
| +064+ | 2.38 | Wilmer Mizell | 184.7 | SLN |
| +067+ | 2.23 | Camilo Pascual | 161.7 | MIN |
| +070+ | 2.18 | Bob Purkey | 244 | CIN |
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