Jonathan Aro vs. Hal Schacker — Career Comparison

On the career pitching numbers, Hal Schacker posted a stronger line than Jonathan Aro. Hal Schacker posted stronger numbers in ERA (5.28 vs 6.55) and WHIP (1.500 vs 1.909). By the career numbers, Hal Schacker 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.