Jay Aldrich vs. Francisco Perez — Career Comparison

Looking at the career totals, Jay Aldrich and Francisco Perez are fairly close on the surface numbers. Jay Aldrich posted stronger numbers in ERA (4.72 vs 5.91) and WHIP (1.537 vs 1.781). Francisco Perez had the advantage in home runs allowed (0.56 per nine innings vs 0.99). By the career numbers, Jay Aldrich 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.