Mark Mercer vs. Sandy Ullrich — Career Comparison

Looking at the career totals, Mark Mercer and Sandy Ullrich are fairly close on the surface numbers. Sandy Ullrich posted stronger numbers in WHIP (1.604 vs 1.826) and home runs allowed (0.49 per nine innings vs 1.17). Mark Mercer had the advantage in ERA (4.7 vs 5.04). By the career numbers, Sandy Ullrich 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.