What makes an athlete cool? Grace. Modesty. Integrity. Making his own style. Zigging when others zag. The nonchalance and the confidence to do things his way and not worry about the reaction.

That is why pro golf has the coolest athletes. PGA Tour golfers check their egos at the first tee. They fashion their own style and appearance. They never react with choreographed celebrations. They police their own game. They're honest all the way to -- and through -- the scorer's tent. And each one is his own man.

But which pro golfer is the coolest? It was difficult, but we've whittled a list of dozens of sweet singers to our top 15 ranking of coolest golfers. (Sorry Tiger.) Enjoy.