Shaun Marcum vs. John Poloni — Career Comparison

Looking at the career totals, Shaun Marcum and John Poloni are fairly close on the surface numbers. Shaun Marcum had the edge in ERA (3.93 vs 6.43). By the career numbers, Shaun Marcum 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.