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

Titleist Brand Ambassador Bill Haas warms up on the range with his new Titleist 910D2 8.5 driver with the SureFit Tour hosel on setting B•2 (standard loft, +.75 upright).

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.

Average score in Round 1? 71.9.

Let's take a look inside his bag...

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.

Robert's SureFit Tour hosel setting is D•2 (-.75 loft, +1.5 upright).

Here's a look at Robert's Scotty Cameron GSS putter.