Todd Coffey vs. Tyler Robertson — Career Comparison

On the career pitching numbers, Todd Coffey posted a stronger line than Tyler Robertson. Todd Coffey posted stronger numbers in ERA (4.1 vs 5.54) and home runs allowed (1.01 per nine innings vs 1.73). By the career numbers, Todd Coffey 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.