Justin Timberlake slapped at a golf tournament

Justin Timberlake is an avid golfer and while playing in the American Century Celebrity Pro-Am in Lake Tahoe recently the star was slapped by a spectator.

The star can be seen walking through a crowd of people when the incident occurs.  He then proceeds to confront the perpetrator shouting "Why would you do that?".

The spectator was later identified and asked to leave the golf course.