Henry Boyle vs. Casey Janssen — Career Comparison

On the career pitching numbers, Henry Boyle posted a stronger line than Casey Janssen. Henry Boyle posted stronger numbers in ERA (3.06 vs 3.63) and home runs allowed (0.24 per nine innings vs 0.88). By the career numbers, Henry Boyle 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.