Seth Halvorsen vs. Mac MacArthur — Career Comparison

Looking at the career totals, Seth Halvorsen and Mac MacArthur are fairly close on the surface numbers. Seth Halvorsen posted stronger numbers in ERA (4.15 vs 5.02) and WHIP (1.404 vs 1.500). Mac MacArthur had the advantage in home runs allowed (0.17 per nine innings vs 1.56). By the career numbers, Seth Halvorsen 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.