Francisco Rodriguez vs. Zack Weiss — Career Comparison

On the career pitching numbers, Francisco Rodriguez posted a stronger line than Zack Weiss. Francisco Rodriguez posted stronger numbers in ERA (2.86 vs 4.61) and WHIP (1.198 vs 1.280). By the career numbers, Francisco Rodriguez 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.