Mark DiFelice vs. John Perkovich — Career Comparison

On the career pitching numbers, Mark DiFelice posted a stronger line than John Perkovich. Mark DiFelice posted stronger numbers in ERA (3.79 vs 7.2) and WHIP (1.303 vs 1.600). By the career numbers, Mark DiFelice 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.