Don Black vs. Steve Renko — Career Comparison

Looking at the career totals, Don Black and Steve Renko are fairly close on the surface numbers. Steve Renko posted stronger numbers in ERA (3.99 vs 4.35) and WHIP (1.417 vs 1.509). Don Black had the advantage in home runs allowed (0.52 per nine innings vs 0.89). By the career numbers, Steve Renko 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.