Fred Hayner vs. David Martinez — Career Comparison

On the career pitching numbers, David Martinez posted a stronger line than Fred Hayner. David Martinez posted stronger numbers in ERA (6.38 vs 13.5) and WHIP (1.418 vs 3.000). By the career numbers, David Martinez 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.