Joe Rogalski vs. Mark Williamson — Career Comparison

Looking at the career totals, Joe Rogalski and Mark Williamson are fairly close on the surface numbers. Joe Rogalski posted stronger numbers in ERA (2.57 vs 3.86) and home runs allowed (0 per nine innings vs 0.81). Mark Williamson had the advantage in WHIP (1.418 vs 1.714). By the career numbers, Joe Rogalski 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.