John Harkins vs. Greg Holland — Career Comparison

Looking at the career totals, John Harkins and Greg Holland are fairly close on the surface numbers. Greg Holland posted stronger numbers in ERA (3.14 vs 4.09) and WHIP (1.238 vs 1.369). John Harkins had the advantage in home runs allowed (0.2 per nine innings vs 0.71). By the career numbers, Greg Holland 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.