Henry Keupper vs. Andy Sonnanstine — Career Comparison

On the career pitching numbers, Henry Keupper posted a stronger line than Andy Sonnanstine. Henry Keupper posted stronger numbers in ERA (4.27 vs 5.26) and home runs allowed (0.13 per nine innings vs 1.32). By the career numbers, Henry Keupper 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.