Oswaldo Mairena vs. Jason Wheeler — Career Comparison

On the career pitching numbers, Oswaldo Mairena posted a stronger line than Jason Wheeler. Oswaldo Mairena posted stronger numbers in ERA (6.06 vs 9) and WHIP (1.654 vs 3.333). By the career numbers, Oswaldo Mairena 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.