John Miller vs. Fernando Valenzuela — Career Comparison

On the career pitching numbers, Fernando Valenzuela posted a stronger line than John Miller. Fernando Valenzuela posted stronger numbers in ERA (3.54 vs 3.89) and WHIP (1.343 vs 1.449). By the career numbers, Fernando Valenzuela 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.