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.

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

Presnell's bag features a Titleist 909D3 8.5 driver, new 910F 13.5 fairway metal, 910H 17.0 hybrid...

That's the new Titleist 910 Driver...

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...

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

And Vokey Design Spin Milled wedges (52, 58, 62) with "MA" stamping.