Al Aber vs. John Perkovich — Career Comparison

On the career pitching numbers, Al Aber posted a stronger line than John Perkovich. Al Aber posted stronger numbers in ERA (4.18 vs 7.2) and WHIP (1.459 vs 1.600). By the career numbers, Al Aber 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.