Jason Dufner's demeanor explained
Jason Dufner won the PGA Championship over the weekend, which only made people take note of his quiet demeanor even more than usual.
The golfer is known for having next to no emotion, and being what friends call "melancholy."
Finally, there's a reason for why he acts this way, which is explained is in the clip above. It's a much better reason than other athletes who have similar demeanors like, say, Jay Cutler.
Dufner also lost none of his sense of humor and razzed a reporter's shirt in his presser.
You can see that moment in the video below at about 2:24.