Tom Parsons vs. Alfredo Simon — Career Comparison

On the career pitching numbers, Alfredo Simon posted a stronger line than Tom Parsons. Alfredo Simon posted stronger numbers in ERA (4.56 vs 4.72) and home runs allowed (1.22 per nine innings vs 1.5). By the career numbers, Alfredo Simon 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.