If you guessed Rickie Fowler... you're incorrect.

If you guessed Robert Karlsson or Rory McIlroy or Ross Fisher... you're also off the mark.

With the official launch of the new Titleist Pro V1 and Pro V1x golf balls, the Titleist Tour Van also got a makeover.

Titleist Brand Ambassador Ben Crane signs autographs after hosting a junior clinic Tuesday on the North Course's fourth tee.

Ben is the defending champion here at the Farmers Insurance Open. Here's what's in his bag: New Titleist Pro V1x golf ball, new Titleist 910D2 9.5 driver, new 910Fd 15.0 and 910F 17.0 fairway metals, 909H 21.0 hybrid, AP2 irons (5-PW) and...

...three Vokey Design Spin Milled wedges (51•12, 56•14, 60•10), stamped simply with "BC."

There's the bag of Titleist Brand Ambassador Chris Kirk.

Chris plays a Pro V1x golf ball, 909D3 9.5 driver, new 910F 13.5 fairway metal, 909H 19.0 hybrid, MB irons (3-9), Vokey Design Spin Milled wedges (48•10, 54•14, 60) and Scotty Cameron Studio Select Laguna 1.6 putter.

Chris also stamps his wedges with a simple "CK."