Tom Brown vs. Bill Mack — Career Comparison

On the career pitching numbers, Bill Mack posted a stronger line than Tom Brown. Bill Mack posted stronger numbers in ERA (3 vs 4.15) and WHIP (1.000 vs 1.385). By the career numbers, Bill Mack 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.