John Callahan vs. Brad Hennessey — Career Comparison

Brad Hennessey 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. Brad Hennessey posted stronger surface numbers — ERA 4.69 and WHIP 1.508 compared to 16.2 and 3.000 for John Callahan. By the career numbers, Brad Hennessey had the better of this cross-role comparison — though era context would sharpen the verdict.