George Mitchell vs. Faustino Valdés — Career Comparison

On the career pitching numbers, George Mitchell posted a stronger line than Faustino Valdés. George Mitchell posted stronger numbers in ERA (4.5 vs 4.62) and WHIP (1.478 vs 1.549). By the career numbers, George Mitchell 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.