Mark Johnson vs. Jason Simontacchi — Career Comparison

Looking at the career totals, Mark Johnson and Jason Simontacchi are fairly close on the surface numbers. Jason Simontacchi posted stronger numbers in ERA (5.09 vs 7.5) and WHIP (1.496 vs 1.750). Mark Johnson had the advantage in home runs allowed (1.13 per nine innings vs 1.44). By the career numbers, Jason Simontacchi 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.