Rick Anderson vs. Spencer Arrighetti — Career Comparison

Looking at the career totals, Rick Anderson and Spencer Arrighetti are fairly close on the surface numbers. Rick Anderson posted stronger numbers in ERA (3.75 vs 4.69) and home runs allowed (0.75 per nine innings vs 1.35). Spencer Arrighetti had the advantage in WHIP (1.409 vs 2.083). By the career numbers, Rick Anderson 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.