Jake Arrieta vs. Roy Witherup — Career Comparison

Looking at the career totals, Jake Arrieta and Roy Witherup are fairly close on the surface numbers. Jake Arrieta posted stronger numbers in ERA (3.98 vs 4.44) and WHIP (1.268 vs 1.454). Roy Witherup had the advantage in home runs allowed (0.17 per nine innings vs 1.01). By the career numbers, Jake Arrieta 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.