Kei Igawa vs. Porter Vaughan — Career Comparison

On the career pitching numbers, Porter Vaughan posted a stronger line than Kei Igawa. Porter Vaughan posted stronger numbers in ERA (5.83 vs 6.66) and home runs allowed (0.89 per nine innings vs 1.88). By the career numbers, Porter Vaughan 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.