Michael Mercado vs. Unknown Smith — Career Comparison

Looking at the career totals, Michael Mercado and Unknown Smith are fairly close on the surface numbers. Michael Mercado posted stronger numbers in ERA (11.81 vs 18.9) and WHIP (2.250 vs 3.600). Unknown Smith had the advantage in home runs allowed (5.4 per nine innings vs 5.63). By the career numbers, Michael Mercado 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.