John Koronka vs. Robbie Ray — Career Comparison

On the career pitching numbers, Robbie Ray posted a stronger line than John Koronka. Robbie Ray posted stronger numbers in ERA (3.94 vs 6.25) and WHIP (1.303 vs 1.642). By the career numbers, Robbie Ray 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.