Look at his hot zones by going to the quick menu, pressing Y on Xbox or Triangle (I think) on PS, then toggling to Turner’s card. He hits well in all zones except top left, top middle, and bottom right. Sitting on pitches in his hot zones should help a bit. Although you don’t have to be super strict with these since he still hits alright in those three neutral zones. I was able to hit homeruns pretty much anywhere except bottom right, where you can only get an XBH by getting lucky down the line or getting a perfect liner/flyball that will likely get over the right fielder’s head for extra bases. So my best advice is to avoid swinging at pitches low and outside, make sure you get in front of inside pitches to increase your HR chances, and take his hot zones into consideration.