Francisco Perez vs. Charlie Roy — Career Comparison

On the career pitching numbers, Charlie Roy posted a stronger line than Francisco Perez. Charlie Roy posted stronger numbers in ERA (4.91 vs 5.91) and WHIP (1.582 vs 1.781). By the career numbers, Charlie Roy 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.