Ken Johnson vs. Jack Rowan — Career Comparison

Looking at the career totals, Ken Johnson and Jack Rowan are fairly close on the surface numbers. Jack Rowan posted stronger numbers in ERA (3.07 vs 3.46) and home runs allowed (0.11 per nine innings vs 0.81). Ken Johnson had the advantage in WHIP (1.231 vs 1.334). By the career numbers, Jack Rowan 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.