Casey Janssen vs. Wei-Chung Wang — Career Comparison

On the career pitching numbers, Casey Janssen posted a stronger line than Wei-Chung Wang. Casey Janssen posted stronger numbers in ERA (3.63 vs 6.52) and WHIP (1.238 vs 1.711). By the career numbers, Casey Janssen 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.