Spencer Arrighetti vs. Ralph Caldwell — Career Comparison

On the career pitching numbers, Ralph Caldwell posted a stronger line than Spencer Arrighetti. Ralph Caldwell posted stronger numbers in ERA (4.2 vs 4.69) and home runs allowed (0.24 per nine innings vs 1.35). By the career numbers, Ralph Caldwell 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.