Prior 5 years: 3.44, 3.56, 3.01, 3.75, 3.86 ERA. Pitching in the AL the whole time so no league change.
Pretty hard to predict someone is all of a sudden going to lose 1.5 K/9 and add 1.0 BB/9 after extremely consistent numbers. Idk what has changed but there's very little in the past couple years to indicate this was going to be his ability.
Also please feel free to show everyone the post where you called him bust prior to the season