Maybe he just needs to use the fastball less. Keep the slider and change as the primary offerings and then use the fastball as the change of pace. His slider and change average 85 and 87 so ... maybe he just needs to pitch really backwards.
Absolute filth in the 2nd inning from Kikuchi to the first 2 batters. Damn.
He really needs that changeup to work for him like this in the regular season.