John Hiller vs. Roman Mendez — Career Comparison

Looking at the career totals, John Hiller and Roman Mendez are fairly close on the surface numbers. John Hiller had the edge in ERA (2.83 vs 3.09). By the career numbers, John Hiller 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.