Kohei Arihara vs. Casey Coleman — Career Comparison

On the career pitching numbers, Casey Coleman posted a stronger line than Kohei Arihara. Casey Coleman posted stronger numbers in ERA (5.72 vs 7.57) and home runs allowed (0.91 per nine innings vs 2.23). By the career numbers, Casey Coleman 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.