10/1 for a US Open is too short for me. You'll need a completely different skill set. He has 60% fairways hit this year. At a US Open he'll need to be more accurate off the tee. Tighter fairways and thicker rough will make it harder. Putting is what sets him apart at the moment. It'll be harder to hit GIR's in the US Open. I'm not saying he can't win, but I'd want more than 10/1.
