Jason Adam vs. Isaac Mattson — Career Comparison

Looking at the career totals, Jason Adam and Isaac Mattson are fairly close on the surface numbers. Jason Adam posted stronger numbers in ERA (2.69 vs 2.98) and WHIP (1.060 vs 1.256). Isaac Mattson had the advantage in home runs allowed (0.63 per nine innings vs 0.91). By the career numbers, Jason Adam 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.