Joe Boyle vs. Pat Zachry — Career Comparison

Looking at the career totals, Joe Boyle and Pat Zachry are fairly close on the surface numbers. Pat Zachry had the edge in ERA (3.52 vs 4.98). By the career numbers, Pat Zachry 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.