Charlie Kerfeld vs. Marcos Mateo — Career Comparison

Looking at the career totals, Charlie Kerfeld and Marcos Mateo are fairly close on the surface numbers. Charlie Kerfeld posted stronger numbers in ERA (4.2 vs 4.65) and home runs allowed (0.54 per nine innings vs 1.63). Marcos Mateo had the advantage in WHIP (1.340 vs 1.572). By the career numbers, Charlie Kerfeld 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.