Dustin Johnson waves to the crowd after finishing on the 18th hole during the final round of the St. Jude Classic. He shot 66 on Sunday to win the tournament at 9 under par. (Andy Lyons/Getty Images)

Dustin Johnson played solid down the stretch.  He demonstrated that he is an elite player on the PGA tour.  His birdies on 16 and 17 vaulted him to the top of the leader board.

The collapse at the top of the leader board showed that all players must stay focused for the entire 18 holes.  But how can one keep their focus for 5 – 6 hours while people are taking your picture, shouting at you, wanting to shake your hand, and of course the millions of golfers watching on TV.

Each person must find their own way to stay focused.  I believe that the mental aspect of the game is directly related to what you do a few days before the tournament and what you do during the tournament.  Competitive-Golfer.com gives very good advice on how to prepare for a tournament.  I agree with most of what they suggest.  Each person has to find their own way to prepare, but physical fitness is the foundation to success on the links!  Enjoy hitting the links this week; the weather is going to be fantastic.