Joe Boyle vs. Joe Willis — Career Comparison

Looking at the career totals, Joe Boyle and Joe Willis are fairly close on the surface numbers. Joe Willis posted stronger numbers in ERA (4.63 vs 4.98) and home runs allowed (0.17 per nine innings vs 0.86). Joe Boyle had the advantage in WHIP (1.444 vs 1.568). By the career numbers, Joe Willis 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.