Walt Masterson vs. Jim Perry — Career Comparison

Looking at the career totals, Walt Masterson and Jim Perry are fairly close on the surface numbers. Jim Perry posted stronger numbers in ERA (3.45 vs 4.15) and WHIP (1.284 vs 1.515). Walt Masterson had the advantage in home runs allowed (0.55 per nine innings vs 0.84). By the career numbers, Jim Perry 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.