Jonathan Aro vs. John Pregenzer — Career Comparison

On the career pitching numbers, John Pregenzer posted a stronger line than Jonathan Aro. John Pregenzer posted stronger numbers in ERA (4.88 vs 6.55) and home runs allowed (0.33 per nine innings vs 1.64). By the career numbers, John Pregenzer 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.