Roy Heiser vs. Chang-Yong Lim — Career Comparison

Looking at the career totals, Roy Heiser and Chang-Yong Lim are fairly close on the surface numbers. Chang-Yong Lim posted stronger numbers in ERA (5.4 vs 6.35) and home runs allowed (0 per nine innings vs 1.59). Roy Heiser had the advantage in WHIP (2.647 vs 2.800). By the career numbers, Chang-Yong Lim 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.