John Koronka vs. Mac MacArthur — Career Comparison

John Koronka built a career as a starting pitcher and Mac MacArthur as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mac MacArthur posted stronger surface numbers — ERA 5.02 and WHIP 1.500 compared to 6.25 and 1.642 for John Koronka. By the career numbers, Mac MacArthur had the better of this cross-role comparison — though era context would sharpen the verdict.