John Callahan vs. Ethan Martin — Career Comparison

Ethan Martin built a career as a starting pitcher and John Callahan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ethan Martin posted stronger surface numbers — ERA 5.93 and WHIP 1.682 compared to 16.2 and 3.000 for John Callahan. By the career numbers, Ethan Martin had the better of this cross-role comparison — though era context would sharpen the verdict.