Ben Callahan vs. Brad Hennessey — Career Comparison

Looking at the career totals, Ben Callahan and Brad Hennessey are fairly close on the surface numbers. Brad Hennessey posted stronger numbers in ERA (4.69 vs 12.54) and WHIP (1.508 vs 2.571). Ben Callahan had the advantage in home runs allowed (0 per nine innings vs 1.1). By the career numbers, Brad Hennessey had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.