Lisalverto Bonilla vs. Paul Hartzell — Career Comparison

On the career pitching numbers, Paul Hartzell posted a stronger line than Lisalverto Bonilla. Paul Hartzell posted stronger numbers in ERA (3.9 vs 6.28) and WHIP (1.383 vs 1.570). By the career numbers, Paul Hartzell 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.