This Scotty Cameron Studio Select Kombi Mid also played a crucial role in Bill's season-ending success.

The session begins.

Buckets of Pro V1 and Pro V1x golf balls, ready for action. Of the 28 players competing this week at Kapalua, 23 are Titleist golf ball players.

Titleist Brand Ambassador and reigning FedEx Cup champion Bill Haas begins his range session.

In Bill's hands: Perhaps the most famous club of the 2011 PGA Tour season.

It's Bill's Vokey Design Spin Milled 60º•E (bent to 59º), which he used to hit the famous water shot at the 2011 Tour Championship.

He's just warming up with a few stretches.

Titleist Brand Ambassador Nick Watney shows off his stretching routine.

Defending champ Jonathan Byrd works through a pile of Pro V1x golf balls.

Scott won the Greenbrier Classic last year in his rookie season on the PGA Tour.