The U.S. Open Champion signs a few autographs on his way to the first tee for his practice round.

And he's off...

Titleist Brand Ambassador Matteo Manassero hits a wedge shot toward the end of his practice round.

Matteo is gaming new Prototype Titleist AP2 (712 Series) irons for the first time this week.

Here's a closer look at Matteo's bag.

Now on the putting green, Matteo gets in some work with his Scotty Cameron Newport 2 Timeless GSS putter.

And... it's good.

On his way to the putting green: Titleist Brand Ambassador Rickie Fowler. (Note the 2011 British Championship Scotty Dog headcover.)

Rickie checks in with Scotty Cameron Tour Rep Larry Silveria (right) and Titleist Tour Rep Fordie Pitts.

Inside the Titleist Tour Van, Titleist Brand Ambassador Zach Johnson checks out his new re-grips.