Mark Mercer vs. W. Williams — Career Comparison

Looking at the career totals, Mark Mercer and W. Williams are fairly close on the surface numbers. W. Williams posted stronger numbers in WHIP (1.765 vs 1.826) and home runs allowed (0 per nine innings vs 1.17). Mark Mercer had the advantage in ERA (4.7 vs 6.35). By the career numbers, W. Williams 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.