Mike Mattimore vs. Steven Shell — Career Comparison

Looking at the career totals, Mike Mattimore and Steven Shell are fairly close on the surface numbers. Steven Shell posted stronger numbers in ERA (2.45 vs 3.83) and WHIP (1.127 vs 1.423). Mike Mattimore had the advantage in home runs allowed (0.22 per nine innings vs 0.98). By the career numbers, Steven Shell 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.