Roy Witherup vs. Barry Zito — Career Comparison

Looking at the career totals, Roy Witherup and Barry Zito are fairly close on the surface numbers. Barry Zito posted stronger numbers in ERA (4.04 vs 4.44) and WHIP (1.357 vs 1.454). Roy Witherup had the advantage in home runs allowed (0.17 per nine innings vs 0.98). By the career numbers, Barry Zito 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.