Bob Black vs. John Perkovich — Career Comparison

On the career pitching numbers, Bob Black posted a stronger line than John Perkovich. Bob Black posted stronger numbers in ERA (3.22 vs 7.2) and WHIP (1.171 vs 1.600). By the career numbers, Bob Black 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.