LOUISVILLE, Ky. -- It will take a lot more than playing Valhalla to fire up the defending PGA champion.

 The quiet and reserved Jason Dufner got a first look at Valhalla Tuesday, just 45 days ahead of the 96th PGA Championships. Dufner says defending his title will be tough but says it’s important he stays true to his quiet character.

Dufner's visit was part of a media tour in which he hit five golf balls from the fourth floor of the Churchill Downs clubhouse into the winner's circle.

The PGA Championship will be at Valhalla August 7-10.