Jonathan Aro vs. Ed Knouff — Career Comparison

On the career pitching numbers, Ed Knouff posted a stronger line than Jonathan Aro. Ed Knouff posted stronger numbers in ERA (4.17 vs 6.55) and WHIP (1.487 vs 1.909). By the career numbers, Ed Knouff 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.