Unknown Hayes vs. Adrian Morejon — Career Comparison

Looking at the career totals, Unknown Hayes and Adrian Morejon are fairly close on the surface numbers. Adrian Morejon posted stronger numbers in ERA (3.43 vs 6.23) and WHIP (1.243 vs 1.385). Unknown Hayes had the advantage in home runs allowed (0 per nine innings vs 0.89). By the career numbers, Adrian Morejon 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.