The 2013 Players Championship teed off this morning as Tiger Woods, Roberto Castro, Phil Mickelson and many of the biggest names in golf, play in one of the biggest tournaments on the PGA Tour calendar. Roberto Castro is currently leading in the first round at 9 under par. Follow the action live by clicking here.

The Stadium Course at TPC Sawgrass remains a mystery to Tiger Woods, who has just one top-10 finish in The Players Championship since his lone victory in 2001. He is only 1 under par but there is plenty of golfing to do.

Phil Mickelson is tied with Tiger at 1 under par, and seems to be finding his game as the day goes on while Vijay Singh finds himself struggling, as he is 1 over par through 5 holes.

Singh is in the midst of suing the PGA for exposing him to "public humiliation and ridicule" during a 12-week investigation into his use of a controversial performance enhancer called "deer antler spray." Regarding his lawsuit, Singh released a statement that read:

"I am proud of my achievement, my work ethic and the way I live my life. The PGA Tour not only treated me unfairly, but displayed a lack of professionalism that should concern every professional golfer and fan of the game."