2013 U.S. Open: Live updates from Round 1 at Merion

Tiger Woods, right, talks with Rory McIlroy, of Northern Ireland, on the second hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Thursday, June 13, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings)

We're live at Merion Golf Club as the world's biggest golf stars tee off in the first round of the U.S. Open. Follow along below for live updates from the course - including the latest weather news.

And as always, feel free to share your thoughts on the tournament. Who do you think will win? Have your say with us.

On a mobile device? Click HERE to follow along and post comments.

Click here for complete coverage of the U.S. Open at Merion Golf Club.