Jamie Arnold vs. Keith Hessler — Career Comparison

Looking at the career totals, Jamie Arnold and Keith Hessler are fairly close on the surface numbers. Jamie Arnold posted stronger numbers in WHIP (1.652 vs 1.765) and home runs allowed (0.58 per nine innings vs 1.59). Keith Hessler had the advantage in ERA (5.56 vs 5.73). By the career numbers, Jamie Arnold 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.