Marv Grissom vs. Wilson Heredia — Career Comparison

On the career pitching numbers, Marv Grissom posted a stronger line than Wilson Heredia. Marv Grissom posted stronger numbers in WHIP (1.401 vs 1.768) and home runs allowed (0.72 per nine innings vs 1.14). By the career numbers, Marv Grissom 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.