| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bob Turley | NYA | 4.48 | 195809120_NYA_CHA |
| Billy O'Dell | BAL | 4.09 | 195809110_BAL_OAK |
| Warren Spahn | ATL | 3.43 | 195809130_SLN_ATL |
| Frank Lary | DET | 2.61 | 195809120_BAL_DET |
| Dick Donovan | CHA | 2.02 | 195809110_BOS_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Urban | OAK | -5.83 | 195809130_MIN_OAK |
| Dick Drott | CHN | -4.53 | 195809120_CHN_CIN |
| Seth Morehead | PHI | -3.67 | 195809130_SFN_PHI |
| Ruben Gomez | SFN | -2.01 | 195809121_SFN_PHI |
| Dave Sisler | BOS | -1.5 | 195809130_BOS_CLE |
Based on accumulated WAA for this season up to 1958-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.43 | Whitey Ford | 201.3 | NYA |
| +007+ | 6.87 | Bob Turley | 235 | NYA |
| +012+ | 5.92 | Sam Jones | 226.7 | SLN |
| +014+ | 5.74 | Red Witt | 106 | PIT |
| +015+ | 5.72 | Warren Spahn | 272 | ATL |
| +017+ | 5.64 | Billy Pierce | 219 | CHA |
| +018+ | 5.58 | Jack Harshman | 214.7 | BAL |
| +020+ | 5.12 | Stu Miller | 157.3 | SFN |
| +023+ | 5.01 | Frank Lary | 232 | DET |
| +024+ | 4.71 | Billy O'Dell | 214.3 | BAL |
| +025+ | 4.68 | Lew Burdette | 251.3 | ATL |
| +026+ | 4.59 | Carl Willey | 129.7 | ATL |
| +029+ | 4.37 | Dick Donovan | 226 | CHA |
| +032+ | 3.87 | Cal McLish | 205.7 | CLE |
| +033+ | 3.83 | Joey Jay | 95.7 | ATL |
| +037+ | 3.46 | Hoyt Wilhelm | 112.7 | TOT |
| +043+ | 3.22 | Juan Pizarro | 82 | ATL |
| +047+ | 3.11 | Johnny Antonelli | 226 | SFN |
| +048+ | 3.06 | Robin Roberts | 242.3 | PHI |
| +054+ | 2.65 | Wilmer Mizell | 178.7 | SLN |
| +055+ | 2.56 | Gary Bell | 154 | CLE |
| +060+ | 2.31 | Art Ditmar | 131.7 | NYA |
| +067+ | 2.2 | Arnie Portocarrero | 182 | BAL |
| +068+ | 2.19 | Camilo Pascual | 161.7 | MIN |
| +072+ | 2.12 | Dave Hillman | 110 | CHN |
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