Dae-Sung Koo vs. Fuller Thompson — Career Comparison

On the career pitching numbers, Fuller Thompson posted a stronger line than Dae-Sung Koo. Fuller Thompson posted stronger numbers in WHIP (1.500 vs 1.565) and home runs allowed (0 per nine innings vs 0.78). By the career numbers, Fuller Thompson 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.