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

And he's off...

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.

And... it's good.

Check out the Tour Black finish and custom "Cowboy Orange" paintfill.

Titleist Brand Ambassador Harrison Frazar hits out of the rough with his Vokey Design TVD wedge.

Pro V1x loyalist Mark Wilson gets in a bunker practice session.

Titleist Brand Ambassador Brendan Steele hits his tee shot at the par-3 12th. See you next week!

There's Titleist Brand Ambassador Steve Stricker, putting in some work with one of his Vokey Design Spin Milled wedges.