Paul Clemens vs. Michael Mercado — Career Comparison

On the career pitching numbers, Paul Clemens posted a stronger line than Michael Mercado. Paul Clemens posted stronger numbers in ERA (4.89 vs 11.81) and WHIP (1.500 vs 2.250). By the career numbers, Paul Clemens 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.