Roberto Duran vs. John Mackinson — Career Comparison

Looking at the career totals, Roberto Duran and John Mackinson are fairly close on the surface numbers. Roberto Duran posted stronger numbers in ERA (6.58 vs 7.36) and home runs allowed (0 per nine innings vs 1.23). John Mackinson had the advantage in WHIP (1.773 vs 1.846). By the career numbers, Roberto Duran 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.