Unknown Clark vs. Paul Hartzell — Career Comparison

Looking at the career totals, Unknown Clark and Paul Hartzell are fairly close on the surface numbers. Paul Hartzell posted stronger numbers in ERA (3.9 vs 7.5) and WHIP (1.383 vs 1.500). Unknown Clark had the advantage in home runs allowed (0 per nine innings vs 0.63). By the career numbers, Paul Hartzell 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.