Joe Boyle vs. Charlie Shields — Career Comparison

Looking at the career totals, Joe Boyle and Charlie Shields are fairly close on the surface numbers. Charlie Shields posted stronger numbers in ERA (4.31 vs 4.98) and home runs allowed (0.08 per nine innings vs 0.86). Joe Boyle had the advantage in WHIP (1.444 vs 1.656). By the career numbers, Charlie Shields 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.