Unknown Patterson vs. Glenn Spencer — Career Comparison

Looking at the career totals, Unknown Patterson and Glenn Spencer are fairly close on the surface numbers. Glenn Spencer posted stronger numbers in ERA (4.53 vs 7.71) and WHIP (1.478 vs 1.714). Unknown Patterson had the advantage in home runs allowed (0 per nine innings vs 0.62). By the career numbers, Glenn Spencer 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.