DUBLIN, Ohio -- It's an old ploy used to get your opponent off his game while playing for that friendly wager.
Ask if he inhales or exhales while taking his backswing, and see the face contort and the ball go in every different direction.
Who thinks about such things?
Well, Jason Dufner does. And it's working.
The 2013 PGA Championship winner has shot consecutive 65s at Muirfield Village Golf Club, setting a Memorial Tournament record and opening up a comfortable lead through two rounds. Dufner is 5 shots ahead of Daniel Summerhays.