Jonathan Aro vs. Roger Smithberg — Career Comparison

On the career pitching numbers, Roger Smithberg posted a stronger line than Jonathan Aro. Roger Smithberg posted stronger numbers in ERA (4.09 vs 6.55) and WHIP (1.318 vs 1.909). By the career numbers, Roger Smithberg 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.