Wei-Yin Chen vs. Dave Haas — Career Comparison

On the career pitching numbers, Wei-Yin Chen posted a stronger line than Dave Haas. Wei-Yin Chen posted stronger numbers in ERA (4.18 vs 4.84) and WHIP (1.289 vs 1.654). By the career numbers, Wei-Yin Chen 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.