Kelvin Herrera vs. Ken Ray — Career Comparison

On the career pitching numbers, Kelvin Herrera posted a stronger line than Ken Ray. Kelvin Herrera posted stronger numbers in ERA (3.21 vs 5.13) and WHIP (1.236 vs 1.734). By the career numbers, Kelvin Herrera 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.