Jim Mains vs. Ariel Prieto — Career Comparison

Looking at the career totals, Jim Mains and Ariel Prieto are fairly close on the surface numbers. Jim Mains posted stronger numbers in WHIP (1.500 vs 1.675) and home runs allowed (0 per nine innings vs 0.87). Ariel Prieto had the advantage in ERA (4.85 vs 5.63). By the career numbers, Jim Mains 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.