Si Woo Kim aces the 16th hole at Valero Texas Open, leads after two rounds

Si Woo Kim extended his lead at the Valero Texas Open on Friday in a big way.

With a hole-in-one.

Using a nine iron on the par-3 16th hole, Kim’s shot from 167 yards away took a few hops and then buried itself in the cup.

It was his second career ace, with his last one coming four years ago. It’s just the second ace on this course in this event, the last one happening in 2013.

Kim’s hole-in-one is the 22nd on the PGA Tour this season.

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He will try to join J.B. Holmes (Genesis) and Francesco Molinari (Arnold Palmer) on the list of golfers who won the tournament in which they recorded an ace.

The ace extended Kim’s lead to four shots over a slew of golfers tied for second, including Jordan Spieth, Harold Varner III and Rickie Fowler.

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Kim finished with a second-round 66. He had four birdies and no bogeys to go with his ace.