Ken Johnson vs. Charlie Robertson — Career Comparison

Looking at the career totals, Ken Johnson and Charlie Robertson are fairly close on the surface numbers. Ken Johnson posted stronger numbers in ERA (3.46 vs 4.44) and WHIP (1.231 vs 1.518). Charlie Robertson had the advantage in home runs allowed (0.34 per nine innings vs 0.81). By the career numbers, Ken Johnson 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.