Juan Then vs. W. Williams — Career Comparison

Looking at the career totals, Juan Then and W. Williams are fairly close on the surface numbers. Juan Then posted stronger numbers in ERA (4.91 vs 6.35) and WHIP (1.455 vs 1.765). W. Williams had the advantage in home runs allowed (0 per nine innings vs 2.45). By the career numbers, Juan Then 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.