John Allen vs. Wilson Heredia — Career Comparison

Looking at the career totals, John Allen and Wilson Heredia are fairly close on the surface numbers. Wilson Heredia posted stronger numbers in ERA (3.41 vs 18) and WHIP (1.768 vs 2.000). John Allen had the advantage in home runs allowed (0 per nine innings vs 1.14). By the career numbers, Wilson Heredia 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.