...MB irons (3-9) and Vokey Design Spin Milled wedges (48, 54, 58) – stamped with "PRES."

Pop quiz! Name the two new Titleist products Woon Joon Lee is testing in this photo.

Riegger won earlier this year at the Nationwide Tour's Rex Hospital Open.

...and new Titleist Pro V1x prototype golf balls.

Titleist Brand Ambassador John Riegger also needs a good finish this week to earn his 2011 PGA Tour ticket. Let's take a closer look at some of his Titleist equipment...

He also carries Titleist MB irons (4-PW) along with a Titleist AP2 3-iron.

Anderson also plays Titleist AP2 irons (4-PW)...

At 15th on the Nationwide Tour money list, Titleist Brand Ambassador Bobby Gates already has his 2011 PGA Tour card locked up. Gates' bag is filled with a new Titleist 910 D3 9.5 driver, 910F 13.5 fairway metal, MB irons (4-PW), Vokey Design Spin Milled…

Titleist Brand Ambassador John Mills enters the week 28th on the Nationwide Tour money list, one good week away from a trip to the PGA Tour. In Mills' bag: New Titleist 910D2 9.5 driver, 910F 15.0 fairway metal, 909H 19.0 hybrid, AP2 irons, Vokey Design…

Titleist Brand Ambassador Alistair Presnell already has a runner-up and third-place finish this year. A victory this week would earn him a ticket to the PGA Tour.