John Perkovich vs. Bert Roberge — Career Comparison

On the career pitching numbers, Bert Roberge posted a stronger line than John Perkovich. Bert Roberge posted stronger numbers in ERA (3.98 vs 7.2) and WHIP (1.336 vs 1.600). By the career numbers, Bert Roberge 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.