John Harper vs. David Holmberg — Career Comparison

On the career pitching numbers, John Harper posted a stronger line than David Holmberg. John Harper posted stronger numbers in ERA (4.67 vs 5.49) and WHIP (1.421 vs 1.713). By the career numbers, John Harper 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.