R. J. Alaniz vs. Francisco Perez — Career Comparison

Looking at the career totals, R. J. Alaniz and Francisco Perez are fairly close on the surface numbers. Francisco Perez posted stronger numbers in ERA (5.91 vs 8.35) and home runs allowed (0.56 per nine innings vs 1.96). R. J. Alaniz had the advantage in WHIP (1.636 vs 1.781). By the career numbers, Francisco 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.