Jaye Chapman vs. Dae-Sung Koo — Career Comparison

Looking at the career totals, Jaye Chapman and Dae-Sung Koo are fairly close on the surface numbers. Jaye Chapman posted stronger numbers in ERA (3.75 vs 3.91) and home runs allowed (0 per nine innings vs 0.78). Dae-Sung Koo had the advantage in WHIP (1.565 vs 1.667). By the career numbers, Jaye Chapman 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.