Matt Foster vs. Mason Thompson — Career Comparison

Looking at the career totals, Matt Foster and Mason Thompson are fairly close on the surface numbers. Matt Foster posted stronger numbers in ERA (4.3 vs 5.21) and WHIP (1.274 vs 1.667). Mason Thompson had the advantage in home runs allowed (0.87 per nine innings vs 1.36). By the career numbers, Matt Foster 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.