Brian O'Connor vs. Don Williams — Career Comparison

Looking at the career totals, Brian O'Connor and Don Williams are fairly close on the surface numbers. Don Williams posted stronger numbers in WHIP (1.700 vs 1.865) and home runs allowed (0.9 per nine innings vs 1.46). Brian O'Connor had the advantage in ERA (5.11 vs 7.2). By the career numbers, Don 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.