Christy Mathewson vs. Mark Mercer — Career Comparison

Christy Mathewson built a career as a starting pitcher and Mark Mercer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Christy Mathewson posted stronger surface numbers — ERA 2.13 and WHIP 1.058 compared to 4.7 and 1.826 for Mark Mercer. By the career numbers, Christy Mathewson had the better of this cross-role comparison — though era context would sharpen the verdict.