Yilber Díaz vs. Chris Heston — Career Comparison

Looking at the career totals, Yilber Díaz and Chris Heston are fairly close on the surface numbers. Yilber Díaz had the edge in ERA (4.31 vs 4.55). By the career numbers, Yilber Díaz 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.