Mark Johnson vs. Alex Serrano — Career Comparison

Mark Johnson built a career as a starting pitcher and Alex Serrano as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Alex Serrano posted stronger surface numbers — ERA 0 and WHIP 1.000 compared to 7.5 and 1.750 for Mark Johnson. By the career numbers, Alex Serrano had the better of this cross-role comparison — though era context would sharpen the verdict.