Jonathan Aro vs. George Prentiss — Career Comparison

On the career pitching numbers, George Prentiss posted a stronger line than Jonathan Aro. George Prentiss posted stronger numbers in ERA (5.31 vs 6.55) and WHIP (1.682 vs 1.909). By the career numbers, George Prentiss 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.