Bob Keegan vs. Andy Sonnanstine — Career Comparison

On the career pitching numbers, Bob Keegan posted a stronger line than Andy Sonnanstine. Bob Keegan posted stronger numbers in ERA (3.66 vs 5.26) and home runs allowed (0.98 per nine innings vs 1.32). By the career numbers, Bob Keegan 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.