Juan Abreu vs. William Parson — Career Comparison

Looking at the career totals, Juan Abreu and William Parson are fairly close on the surface numbers. Juan Abreu posted stronger numbers in ERA (2.7 vs 4.92) and WHIP (1.350 vs 1.856). William Parson had the advantage in home runs allowed (0.6 per nine innings vs 1.35). By the career numbers, Juan Abreu 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.