Al Piechota vs. Erwin Renfer — Career Comparison

Looking at the career totals, Al Piechota and Erwin Renfer are fairly close on the surface numbers. Erwin Renfer posted stronger numbers in WHIP (1.333 vs 1.774) and home runs allowed (0 per nine innings vs 0.87). Al Piechota had the advantage in ERA (5.66 vs 6). By the career numbers, Erwin Renfer 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.