Calvin Jones vs. Roger Mason — Career Comparison

Looking at the career totals, Calvin Jones and Roger Mason are fairly close on the surface numbers. Roger Mason posted stronger numbers in ERA (4.02 vs 4.33) and WHIP (1.367 vs 1.528). Calvin Jones had the advantage in home runs allowed (0.67 per nine innings vs 0.91). By the career numbers, Roger Mason 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.