Jim Acker vs. Ryan O'Rourke — Career Comparison

Looking at the career totals, Jim Acker and Ryan O'Rourke are fairly close on the surface numbers. Jim Acker posted stronger numbers in ERA (3.97 vs 4.84) and home runs allowed (0.82 per nine innings vs 1.12). Ryan O'Rourke had the advantage in WHIP (1.324 vs 1.423). By the career numbers, Jim Acker 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.