| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 3.86 | 195809030_ATL_PHI |
| Sam Jones | SLN | 3.43 | 195809040_SLN_CHN |
| Frank Lary | DET | 2.12 | 195809030_CHA_DET |
| Stu Miller | SFN | 1.74 | 195809040_SFN_LAN |
| Dick Donovan | CHA | 1.56 | 195809030_CHA_DET |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Drott | CHN | -5.46 | 195809030_SLN_CHN |
| Ruben Gomez | SFN | -2.58 | 195809030_SFN_LAN |
| Seth Morehead | PHI | -2.43 | 195809030_ATL_PHI |
| Dave Sisler | BOS | -1.67 | 195809020_BOS_NYA |
| Bob Mabe | SLN | -0.64 | 195809020_CIN_SLN |
Based on accumulated WAA for this season up to 1958-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 8.4 | Whitey Ford | 201.3 | NYA |
| +007+ | 6.07 | Billy Pierce | 207.7 | CHA |
| +008+ | 5.92 | Bob Turley | 218 | NYA |
| +009+ | 5.85 | Sam Jones | 221.3 | SLN |
| +014+ | 5.57 | Jack Harshman | 201 | BAL |
| +019+ | 5.06 | Billy O'Dell | 197.7 | BAL |
| +021+ | 4.71 | Warren Spahn | 254 | ATL |
| +022+ | 4.59 | Stu Miller | 149.3 | SFN |
| +023+ | 4.33 | Frank Lary | 215 | DET |
| +025+ | 4.27 | Red Witt | 87.3 | PIT |
| +027+ | 4.03 | Dick Donovan | 210.7 | CHA |
| +028+ | 3.82 | Joey Jay | 95.7 | ATL |
| +029+ | 3.8 | Robin Roberts | 229.3 | PHI |
| +031+ | 3.68 | Carl Willey | 112.7 | ATL |
| +033+ | 3.65 | Lew Burdette | 235.3 | ATL |
| +037+ | 3.38 | Cal McLish | 193.7 | CLE |
| +038+ | 3.35 | Johnny Antonelli | 215 | SFN |
| +041+ | 3.19 | Hoyt Wilhelm | 100.7 | TOT |
| +042+ | 3.13 | Arnie Portocarrero | 178.7 | BAL |
| +043+ | 3.09 | Art Ditmar | 124.3 | NYA |
| +055+ | 2.53 | Dave Hillman | 110 | CHN |
| +057+ | 2.4 | Juan Pizarro | 73 | ATL |
| +060+ | 2.29 | Camilo Pascual | 151.3 | MIN |
| +063+ | 2.23 | Ike Delock | 125.3 | BOS |
| +075+ | 1.9 | Gary Bell | 137.7 | CLE |
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