Bob Griffith vs. Williams Perez — Career Comparison

On the career pitching numbers, Bob Griffith posted a stronger line than Williams Perez. Bob Griffith posted stronger numbers in ERA (4.76 vs 5.18) and home runs allowed (0.46 per nine innings vs 1.06). By the career numbers, Bob Griffith 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.