Should be a fun week!

Titleist Brand Ambassador Robert Karlsson opened with a 1-under 71.

Robert plays Titleist MB irons (4-PW), Tour Vokey Design (56) and Vokey Design Spin Milled (49, 60) wedges.

This week, Robert added to his bag a pair of new Titleist 910F fairway metals (13.5, 19.0) with TrueTemper Grafalloy ProLaunch Red shafts.

He has also been gaming the new Titleist 910D3 9.5 driver with Graphite Design Tour AD DI shaft.

With a little "R.K." stamping on the toe...

Titleist Brand Ambassador Michael Sim puts in some work with his Titleist AP2 irons.

Titleist Brand Ambassador Rory McIlroy is currently ranked No. 9 in the world.

That's Titleist Brand Ambassador Nick Watney hitting one of his Titleist AP2 irons.

Average score in Round 1? 71.9.