Mark Mercer vs. Clay Zavada — Career Comparison

On the career pitching numbers, Clay Zavada posted a stronger line than Mark Mercer. Clay Zavada posted stronger numbers in ERA (3.35 vs 4.7) and WHIP (1.392 vs 1.826). By the career numbers, Clay Zavada 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.