Warren Hacker vs. Roy Witherup — Career Comparison

Looking at the career totals, Warren Hacker and Roy Witherup are fairly close on the surface numbers. Warren Hacker posted stronger numbers in ERA (4.21 vs 4.44) and WHIP (1.279 vs 1.454). Roy Witherup had the advantage in home runs allowed (0.17 per nine innings vs 1.27). By the career numbers, Warren Hacker 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.