Juan Berenguer vs. Dan O'Brien — Career Comparison

Looking at the career totals, Juan Berenguer and Dan O'Brien are fairly close on the surface numbers. Juan Berenguer posted stronger numbers in ERA (3.9 vs 5.9) and WHIP (1.394 vs 1.931). Dan O'Brien had the advantage in home runs allowed (0.31 per nine innings vs 0.87). By the career numbers, Juan Berenguer 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.