Titleist Brand Ambassador Kevin Na works on his short game.

Titleist Brand Ambassador and U.S. Ryder Cup player Rickie Fowler signs some autographs for the fans at Cog Hill.

Rickie heads to the media center for his  pre-tournament press conference.

Rickie talks Ryder Cup with a few national golf writers.

Hoffman was the first player to win on the PGA Tour using the new Titleist 910 prototype driver. He games a 910D3 9.5.

Here are his Titleist MB irons...

His 58-degree Vokey TVD Spin Milled...

And his 54-degree Vokey Design Spin Milled.

Meanwhile, Titleist Brand Ambassador Jason Bohn practices his putting stroke.

Here's Titleist Brand Ambassador Jason Dufner's bag. Let's take a look...