Collin Balester vs. Izzy Leon — Career Comparison

Looking at the career totals, Collin Balester and Izzy Leon are fairly close on the surface numbers. Izzy Leon posted stronger numbers in ERA (5.35 vs 5.47) and home runs allowed (0.7 per nine innings vs 1.75). Collin Balester had the advantage in WHIP (1.515 vs 1.759). By the career numbers, Izzy Leon 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.