Jason Dufner claimed his maiden major title last weekend with PGA Championship glory at Oak Hill.
Aided by his familiar waggle, which on most tee shots reaches about an average of nine waggles, Dufner produced one of the most impressive back-nine driving displays in recent major history, not only finding fairways, but splitting them down the middle with distance.
On the tee, Dufner sets his hands behind the ball because it prevents him from whipping the club to the inside.
One of the most interesting aspects of this swing is just how flat he keeps his right foot. This helps him retain his clubhead lag for more distance.
Dufner also utilises the Ben Hogan move in his swing, with right forearm in line with the shaft. Judging by his major winning performance, this is how to hit the ball straight.
Let's take a closer look at a series of snaps from Dufner at the PGA Championship...