Jeff Heathcock vs. John Perkovich — Career Comparison

On the career pitching numbers, Jeff Heathcock posted a stronger line than John Perkovich. Jeff Heathcock posted stronger numbers in ERA (3.76 vs 7.2) and WHIP (1.234 vs 1.600). By the career numbers, Jeff Heathcock 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.