John Leister vs. Faustino Valdés — Career Comparison

On the career pitching numbers, Faustino Valdés posted a stronger line than John Leister. Faustino Valdés posted stronger numbers in ERA (4.62 vs 8.5) and WHIP (1.549 vs 2.028). By the career numbers, Faustino Valdés 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.