Mike Armstrong vs. George Diehl — Career Comparison

On the career pitching numbers, George Diehl posted a stronger line than Mike Armstrong. George Diehl posted stronger numbers in ERA (3.52 vs 4.1) and home runs allowed (0 per nine innings vs 1.12). By the career numbers, George Diehl 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.