Lazaro Estrada vs. Ron Willis — Career Comparison

On the career pitching numbers, Ron Willis posted a stronger line than Lazaro Estrada. Ron Willis posted stronger numbers in ERA (3.32 vs 8.59) and home runs allowed (0.57 per nine innings vs 2.45). By the career numbers, Ron Willis 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.