Kelvin Marte vs. John Valentine — Career Comparison

Looking at the career totals, Kelvin Marte and John Valentine are fairly close on the surface numbers. John Valentine posted stronger numbers in WHIP (1.441 vs 2.100) and home runs allowed (0 per nine innings vs 5.4). Kelvin Marte had the advantage in ERA (0 vs 3.53). 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.