Shawn Armstrong vs. Fred Hayner — Career Comparison

On the career pitching numbers, Shawn Armstrong posted a stronger line than Fred Hayner. Shawn Armstrong posted stronger numbers in ERA (3.82 vs 13.5) and WHIP (1.246 vs 3.000). By the career numbers, Shawn Armstrong 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.