Don Black vs. Roy Witherup — Career Comparison

On the career pitching numbers, Roy Witherup posted a stronger line than Don Black. Roy Witherup posted stronger numbers in WHIP (1.454 vs 1.509) and home runs allowed (0.17 per nine innings vs 0.52). By the career numbers, Roy Witherup 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.