Si Woo has a weaker left hand grip than most. He probably only sees one knuckle when he looks down.

In some of his older swings, he says a pronounced sway away from the target contributed to an inconsistent quality of contact.

A little move off the ball here is OK—a lot of the great players have done that. The key is that you still feel centered. With Si Woo, we want to make sure there’s still some pressure in his left foot going back.

Si Woo used to be fairly laid off at the top. The trick is to make sure his shoulders don’t get too flat. There should be a bit of a steeper look to his shoulder plane.

When his backswing would get laid off, it would lead to a wipey motion and a weaker ball flight. A steeper shoulder plane prevents the club from getting laid off.

We want the overall shape of his swing to be more neutral looking so that the plane of his swing doesn’t travel left of his body lines.

With his swing more neutral, he can set up with his shoulders more open at setup, which will help him move the path slightly left by impact.

A big thing for Si Woo is clubface control. When he feels like he has control over the face, he feels confident.

Si Woo still hits fades and prefers that for his ball flight, but it’s subtle. The ball just falls to the right.