Jack Armstrong vs. Mel Parnell — Career Comparison

On the career pitching numbers, Mel Parnell posted a stronger line than Jack Armstrong. Mel Parnell posted stronger numbers in ERA (3.5 vs 4.58) and home runs allowed (0.53 per nine innings vs 1.17). By the career numbers, Mel Parnell 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.