Michael Kelly vs. Carlos Villanueva — Career Comparison

On the career pitching numbers, Michael Kelly posted a stronger line than Carlos Villanueva. Michael Kelly posted stronger numbers in ERA (3.04 vs 4.31) and home runs allowed (0.79 per nine innings vs 1.25). By the career numbers, Michael Kelly 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.