Boone Logan vs. Bill Wertz — Career Comparison

On the career pitching numbers, Bill Wertz posted a stronger line than Boone Logan. Bill Wertz posted stronger numbers in ERA (4.08 vs 4.5) and home runs allowed (0.7 per nine innings vs 1.12). By the career numbers, Bill Wertz 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.