Jim Henderson vs. John Koronka — Career Comparison

John Koronka built a career as a starting pitcher and Jim Henderson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jim Henderson posted stronger surface numbers — ERA 3.61 and WHIP 1.285 compared to 6.25 and 1.642 for John Koronka. By the career numbers, Jim Henderson had the better of this cross-role comparison — though era context would sharpen the verdict.