Tyler Robertson vs. Duane Underwood — Career Comparison

On the career pitching numbers, Duane Underwood posted a stronger line than Tyler Robertson. Duane Underwood posted stronger numbers in ERA (4.63 vs 5.54) and home runs allowed (0.99 per nine innings vs 1.73). By the career numbers, Duane Underwood 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.