Dan Marion vs. Faustino Valdés — Career Comparison

On the career pitching numbers, Dan Marion posted a stronger line than Faustino Valdés. Dan Marion posted stronger numbers in ERA (3.42 vs 4.62) and WHIP (1.317 vs 1.549). By the career numbers, Dan Marion 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.