Mark Mercer vs. Naoyuki Uwasawa — Career Comparison

On the career pitching numbers, Naoyuki Uwasawa posted a stronger line than Mark Mercer. Naoyuki Uwasawa posted stronger numbers in ERA (2.25 vs 4.7) and WHIP (1.000 vs 1.826). By the career numbers, Naoyuki Uwasawa 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.