Bill Mack vs. B. J. Ryan — Career Comparison

Looking at the career totals, Bill Mack and B. J. Ryan are fairly close on the surface numbers. Bill Mack posted stronger numbers in ERA (3 vs 3.37) and WHIP (1.000 vs 1.332). B. J. Ryan had the advantage in home runs allowed (0.7 per nine innings vs 1.5). By the career numbers, Bill Mack 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.