Lou Koupal vs. John Mackinson — Career Comparison

Lou Koupal built a career as a starting pitcher and John Mackinson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Lou Koupal posted stronger surface numbers — ERA 5.58 and WHIP 1.765 compared to 7.36 and 1.773 for John Mackinson. By the career numbers, Lou Koupal had the better of this cross-role comparison — though era context would sharpen the verdict.