Bob Macdonald vs. Forrest Thompson — Career Comparison

On the career pitching numbers, Forrest Thompson posted a stronger line than Bob Macdonald. Forrest Thompson posted stronger numbers in ERA (3.9 vs 4.34) and home runs allowed (0.61 per nine innings vs 1). By the career numbers, Forrest Thompson 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.