The final major championship of the 2014 season takes place this week at Valhalla Golf Club near Louisville, Kentucky.
There have been few PGA Championships in history with more intrigue and interest than this 96th.
Topping the list is the status of Tiger Woods, who suffered a back injury early in the final round of the World Golf Championships-Bridgestone Invitational. He withdrew halfway through the round and struggled to get off the course. But after playing nine holes in a practice round on Wednesday, he's set to compete. According to Ron Green of Global Golf Post, Tiger said he's "pain-free."
In terms of interest, can Rory McIlroy complete an incredible hat trick of victories, having won the British Open, the Bridgestone Invitational and finishing it off with his second career PGA Championship victory?
How about the emotional return home for Kenny Perry, who is playing on a special invitation in most likely his final major appearance on the PGA Tour?
And just how badly will Adam Scott want to win this week after losing his No. 1 world ranking to McIlroy in Akron, Ohio, on Sunday?
Check out this list of burning questions as the first round approaches.