Riley O'Brien vs. Robbie Weinhardt — Career Comparison

Looking at the career totals, Riley O'Brien and Robbie Weinhardt are fairly close on the surface numbers. Riley O'Brien posted stronger numbers in ERA (3.55 vs 6.39) and WHIP (1.457 vs 1.742). Robbie Weinhardt had the advantage in home runs allowed (0.58 per nine innings vs 0.93). By the career numbers, Riley O'Brien 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.