Mark Mercer vs. Sparrow Morton — Career Comparison

Looking at the career totals, Mark Mercer and Sparrow Morton are fairly close on the surface numbers. Sparrow Morton posted stronger numbers in WHIP (1.588 vs 1.826) and home runs allowed (0 per nine innings vs 1.17). Mark Mercer had the advantage in ERA (4.7 vs 5.29). By the career numbers, Sparrow Morton 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.