John Koronka vs. William Parson — Career Comparison

John Koronka built a career as a starting pitcher and William Parson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. William Parson posted stronger surface numbers — ERA 4.92 and WHIP 1.856 compared to 6.25 and 1.642 for John Koronka. By the career numbers, William Parson had the better of this cross-role comparison — though era context would sharpen the verdict.