Carlos Estevez vs. Ryan O'Rourke — Career Comparison

Looking at the career totals, Carlos Estevez and Ryan O'Rourke are fairly close on the surface numbers. Carlos Estevez had the edge in ERA (3.97 vs 4.84). By the career numbers, Carlos Estevez 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.