Zach played a practice round today with fellow Titleist Brand Ambassador Steve Stricker.

Titleist Brand Ambassador Zach Johnson is also playing well heading into the Open.  He recently edged Jason for a big win at the Crowne Plaza Invitational at Colonial.

Titleist Brand Ambassador Jason Dufner is hoping to make his third victory of the year a major.

Here's the staff bag of Titleist Brand Ambassador Geoff Ogilvy, who hoisted the U.S. Open trophy in 2006 at Winged Foot.

Defending champion, Titleist Brand Ambassador Rory McIlroy, is looking to recreate the magic he delivered last year at Congressional.

The 712 Series AP2 irons used by Titleist Brand Ambassador Ben Crane.  Check out the throwback headcovers on his fairway metals.

The staff members of the Titleist Tour Van got to work early on Wednesday, too.  Here, Scotty Cameron Tour Representative Kelly Moser lends a hand to Pro V1 loyalist K.J. Choi.

Titleist Brand Ambassador Kevin Na is competing in his third U.S. Open.

Pro V1x loyalist James Hahn captured his first Nationwide Tour victory on June 3rd at the Rex Hospital Open.  The next day he celebrated by earning a spot in the U.S. Open by earning medalist honors at the Lake Merced Golf Club/TPC at Harding Park sectional…

Welcome to San Franciso's famed Olympic Club, the oldest Athletic club in the United States (established in 1860).  2012 marks the 5th time that Olympic has played host to the U.S. Open, having previously served as the national championship site in…