He falls in love with his fastball. And it's a good one. And I like that he challenges hitters. But maybe sometimes he's just stubborn about strike outs.
I really admre IV for stepping up and acknowledging that he's playing a part in the home run increase, instead of the default pitcher response heretofore-it's the ball.
I agree with HH. When JV was throwing 99 (which I've seen him do many times even in the ninth inning when we was with Detroit), he might have gotten away with it a bit more. I also that it's a matter of adjustment in part for age. Not even JV is immune from the effects of Father Time. He is 37. Time to pitch with a bit more guile. I'm not suggesting that he fall in love with his breaking ball, but perhaps a little more judicious use of his heater and a little dialing back of the desire to strike out every hitter might help.
What might be interesting about the juiced ball hubbub and the hitters' focus on launch angle is the effect that they might be having on pitchers who pitch to contact. Might have to take a look at that.