Daniel Mengden vs. John Poloni — Career Comparison

Looking at the career totals, Daniel Mengden and John Poloni are fairly close on the surface numbers. Daniel Mengden had the edge in ERA (4.65 vs 6.43). By the career numbers, Daniel Mengden 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.