Ronald Bolanos vs. Jimmy Nelson — Career Comparison

On the career pitching numbers, Jimmy Nelson posted a stronger line than Ronald Bolanos. Jimmy Nelson posted stronger numbers in ERA (4.12 vs 5.25) and WHIP (1.365 vs 1.646). By the career numbers, Jimmy Nelson 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.