Zack Weiss vs. Keiichi Yabu — Career Comparison

Looking at the career totals, Zack Weiss and Keiichi Yabu are fairly close on the surface numbers. Keiichi Yabu posted stronger numbers in ERA (4 vs 4.61) and home runs allowed (0.64 per nine innings vs 2.63). Zack Weiss had the advantage in WHIP (1.280 vs 1.524). By the career numbers, Keiichi Yabu 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.