Blair Calvo vs. Oswaldo Mairena — Career Comparison

On the career pitching numbers, Blair Calvo posted a stronger line than Oswaldo Mairena. Blair Calvo posted stronger numbers in ERA (0 vs 6.06) and WHIP (0.000 vs 1.654). By the career numbers, Blair Calvo 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.