Sean Marshall vs. George Williams — Career Comparison

Looking at the career totals, Sean Marshall and George Williams are fairly close on the surface numbers. George Williams posted stronger numbers in ERA (0 vs 3.86) and home runs allowed (0 per nine innings vs 0.88). Sean Marshall had the advantage in WHIP (1.368 vs 2.250). By the career numbers, George Williams 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.