Mark Baldwin vs. Lou Koupal — Career Comparison

Lou Koupal built a career as a starting pitcher and Mark Baldwin as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mark Baldwin posted stronger surface numbers — ERA 3.37 and WHIP 1.428 compared to 5.58 and 1.765 for Lou Koupal. By the career numbers, Mark Baldwin had the better of this cross-role comparison — though era context would sharpen the verdict.