I got into some 70/80% on the 18th hole ruining a good round.
12 under going into 18, had a little side wind and tried to go at the pin to get that 13 under score that I thought is needed to qualify. Came up just short and right into the deep grass around the bunker. Could not move it on my first shot, second shot I hit about 8 feet by the hole and missed that for a double bogey and back down to 10 under.
The rough around the greens is very tough to handle and the fact that many of the pins are on slopes or places that don't allow you to let a shot run out a little make it tough to get up and down. To score you basically have to hit every fairway and green and avoid any shot that might get you into trouble. It's hard enough to execute the shots without trying for the little extra to get you close on this course, hence my double on 18.
I think the winner here this year will the person who best manages the course and the position of the ball on the greens. I played a couple of rounds at championship green speed and this course plays very different at that speed. The qualifying has a speed that seems a hybrid of very fast and TM tournament, even still there are many subtle little breaks that are tough to manage. On the higher speed, they become even more difficult if you get on the wrong side of the pin.
Hopefully the two rounds of the Open will feature either high winds and / or championship green speed to make this a real test.