Drew Gagnon vs. Dan O'Brien — Career Comparison

Looking at the career totals, Drew Gagnon and Dan O'Brien are fairly close on the surface numbers. Dan O'Brien posted stronger numbers in ERA (5.9 vs 7.32) and home runs allowed (0.31 per nine innings vs 3.28). Drew Gagnon had the advantage in WHIP (1.710 vs 1.931). By the career numbers, Dan 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.