John Callahan vs. Juan Morillo — Career Comparison

Looking at the career totals, John Callahan and Juan Morillo are fairly close on the surface numbers. Juan Morillo posted stronger numbers in ERA (13.5 vs 16.2) and WHIP (2.063 vs 3.000). John Callahan had the advantage in home runs allowed (2.16 per nine innings vs 4.22). By the career numbers, Juan Morillo 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.