Mark Rogers vs. John Williams — Career Comparison

Looking at the career totals, Mark Rogers and John Williams are fairly close on the surface numbers. Mark Rogers posted stronger numbers in ERA (3.49 vs 4.37) and WHIP (1.122 vs 1.436). John Williams had the advantage in home runs allowed (0.59 per nine innings vs 0.92). By the career numbers, Mark Rogers 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.