John Valentine vs. Carlos Villanueva — Career Comparison

Looking at the career totals, John Valentine and Carlos Villanueva are fairly close on the surface numbers. John Valentine posted stronger numbers in ERA (3.53 vs 4.31) and home runs allowed (0 per nine innings vs 1.25). Carlos Villanueva had the advantage in WHIP (1.327 vs 1.441). By the career numbers, John Valentine 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.