Ian Kennedy lead the NL in hit batters last year, (14) and is ALREADY at 8 this year. I think he was trying to hit Puig, just not in the face.
Greinke throws at Montero, but not even close to how dangerous Kennedy is when throwing at hitters. All Montero had to do was turn his back and seemingly had plenty of time to do so. Add to that Greinke doesn't get upset at being hit, he expected it. But you have head-hunting Ian Kennedy walking quickly to the safety of the dugout. At least Greinke doesn't run for cover. I'll grant him that.
Not the biggest Greinke fan, but entirely sick of Kennedy's dangerous pitches. if he can't hit anyone below the shoulders the D-backs need to call him off. Total speculation, but I don't think Montero was thrilled at those head shots either.