Mike Draper vs. Nick Robertson — Career Comparison

On the career pitching numbers, Mike Draper posted a stronger line than Nick Robertson. Mike Draper posted stronger numbers in ERA (4.25 vs 5.3) and home runs allowed (0.43 per nine innings vs 1.51). By the career numbers, Mike Draper 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.