Prelander Berroa vs. John Perkovich — Career Comparison

On the career pitching numbers, Prelander Berroa posted a stronger line than John Perkovich. Prelander Berroa posted stronger numbers in ERA (3.05 vs 7.2) and WHIP (1.548 vs 1.600). By the career numbers, Prelander Berroa 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.