Since the ASB, Hunter Brown and Framber Valdez have been far and away been the best pitchers in the American League.

Hunter with a 1.65 ERA and Valdez with a 1.83 ERA, good for #1 and #2 in the league respectively. That would also make them #2 and #3 in the entire MLB, post-ASB.

Nobody else in the AL has an ERA below 2, and across the entire MLB only Sale and Greene have a sub-2 ERA along with them.