Rob Dibble vs. Arnold Umbach — Career Comparison

Looking at the career totals, Rob Dibble and Arnold Umbach are fairly close on the surface numbers. Rob Dibble posted stronger numbers in ERA (2.98 vs 3.12) and WHIP (1.247 vs 1.551). Arnold Umbach had the advantage in home runs allowed (0.18 per nine innings vs 0.51). By the career numbers, Rob Dibble 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.