To be fair to Na,he is suffering the full swing yips.I don't think he was always like this and it's not intentional.
“I changed my setup starting at the Masters last year,” Na said after the round, when he answered every question from the media and laughed at himself. “I was trying to get more forward, trying to get the backswing more up. And because my balance at the setup is totally different, I don't feel comfortable. I'm trying to get comfortable with my waggles. It's usually a little waggle, half-waggle, little waggle, half-waggle, and boom, supposed to pull the trigger. But if it doesn't work, I've got to go in pairs. So it'll go four; and if it doesn't work, it'll go six; and after that—there's a lot going on in my head.”
The room erupted with laughter.
“And it's not—I'm not being nice to myself, trust me,” Na added. “I'm ripping myself. But you know, there's so much on the line that I just have to sometimes back off. Or I'll force myself to take it back, and on the way down I'll come up and pull up and go over the top. As ugly as it is and as painful as it is, believe me, it's really tough for me, and I'm trying.”