Miguel Aguilar vs. Mark Mercer — Career Comparison

Looking at the career totals, Miguel Aguilar and Mark Mercer are fairly close on the surface numbers. Miguel Aguilar posted stronger numbers in WHIP (1.571 vs 1.826) and home runs allowed (0 per nine innings vs 1.17). Mark Mercer had the advantage in ERA (4.7 vs 6.43). By the career numbers, Miguel Aguilar 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.