Jonathan Aro vs. Mike Fetters — Career Comparison

On the career pitching numbers, Mike Fetters posted a stronger line than Jonathan Aro. Mike Fetters posted stronger numbers in ERA (3.86 vs 6.55) and WHIP (1.520 vs 1.909). By the career numbers, Mike Fetters 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.