Albert Merriwether vs. Sean O'Sullivan — Career Comparison

Looking at the career totals, Albert Merriwether and Sean O'Sullivan are fairly close on the surface numbers. Albert Merriwether posted stronger numbers in ERA (4.5 vs 6.01) and WHIP (1.357 vs 1.616). Sean O'Sullivan had the advantage in home runs allowed (1.64 per nine innings vs 1.93). By the career numbers, Albert Merriwether 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.