Joe Boyle vs. Bob Shirley — Career Comparison

Looking at the career totals, Joe Boyle and Bob Shirley are fairly close on the surface numbers. Bob Shirley had the edge in ERA (3.82 vs 4.98). By the career numbers, Bob Shirley 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.