Francisco de la Rosa vs. Mike Perez — Career Comparison

Looking at the career totals, Francisco de la Rosa and Mike Perez are fairly close on the surface numbers. Mike Perez posted stronger numbers in ERA (3.56 vs 4.5) and WHIP (1.376 vs 2.000). Francisco de la Rosa had the advantage in home runs allowed (0 per nine innings vs 0.68). By the career numbers, Mike Perez 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.