A little further down the range, Titleist Brand Ambassador Rory McIlroy warms up with his Titleist MB irons.

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.