Look how fast the Oakmont greens are!!!

Rory was caught by the Golf Channel on the practice green holing this monster putt. Only problem was, well just watch the video...

The U.S. Open this week at Oakmont is going to be seriouly tough. If this putt is anything to go by Rory is not the man to place your money on. We reckon you better off picking someone who can putt the lights out. Jordan Spieth and Jason Day we're looking at you.

Oakmont is going to be seriously tough! More video evidence here!