Chia-Jen Lo vs. Mark Petkovsek — Career Comparison

On the career pitching numbers, Chia-Jen Lo posted a stronger line than Mark Petkovsek. Chia-Jen Lo posted stronger numbers in ERA (4.19 vs 4.74) and WHIP (1.397 vs 1.472). By the career numbers, Chia-Jen Lo 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.