Roger Erickson vs. Tommy Thompson — Career Comparison

Looking at the career totals, Roger Erickson and Tommy Thompson are fairly close on the surface numbers. Roger Erickson posted stronger numbers in ERA (4.13 vs 6.06) and WHIP (1.411 vs 1.714). Tommy Thompson had the advantage in home runs allowed (0 per nine innings vs 0.77). By the career numbers, Roger Erickson 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.