I am a fan of Haris, but its your first ball that your facing and your trying to look fancy, like all he had to do was give him self some balls, to get a feel for the pitch, and than maybe after try to play those shots. Haris, was also out during Powerplay, so even if he opened we would have gotten the same result more or less.
I still think he should be persisted with, and heck let him open, I have no issues with that, but he does need a bit of talking, to try to give him self some time to settle in the crease.