With the 2012 United States Open Championship opening this Thursday at the Olympic Club in San Francisco, California, Luke Donald will be entering the tournament as the No. 1 ranked golfer in the world, a position that he has held onto for the last three weeks.

The biggest change comes in the form of Dustin Johnson who jumped ten spots following a win at the St. Jude Classic sponsored by FedEx over the weekend. Johnson is the 17th different player to appear in the Top Ten this year.

Here is the rest of the 2012 World Golf Rankings:

1) Luke Donald
2) Rory McIlroy
3) Lee Westwood
4) Tiger Woods
5) Bubba Watson
6) Matt Kuchar
7) Justin Rose
8) Hunter Mahan
9) Jason Dufner
10) Dustin Johnson

For all your news and updates in the run up to the 2012 U.S. Open at Olympic, visit SB Nation's dedicated golf hub. Be sure to head over to USOpen.com for even more coverage from the event.