John Callahan vs. Troy Mattes — Career Comparison

Troy Mattes 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. Troy Mattes posted stronger surface numbers — ERA 6 and WHIP 1.644 compared to 16.2 and 3.000 for John Callahan. By the career numbers, Troy Mattes had the better of this cross-role comparison — though era context would sharpen the verdict.