Na shoots 16 on one hole at Texas Open

Kevin Na has won four tournaments in his career since first turning pro in 2001.

STORY HIGHLIGHTS

• Kevin Na runs up a 12-over-par 16 on one hole at the Texas Open on Thursday
• Na's score is the worst-ever recorded on a par-four hole on the PGA Tour
• Only John Daly, with 18, has hit more strokes on one hole since 1983
• Stewart Cink and J.J. Henry currently lead the field on five-under

(CNN) -- American Kevin Na endured a nightmare experience in the opening round of the Texas Open on Thursday as he ran up a 12-over-par 16 at the par-4 ninth hole.

It was the worst score on a par-four in PGA Tour history and only John Daly, with an 18 in 1998, has managed more at a single hole since Tour scorecard records began in 1983.

The 27-year-old, who was born in Seoul, eventually holed out from six feet for his horror score, but otherwise played fine golf to limit his losses to an eight-over 80 to be tied for 140th after day one.

J.J. Henry and 2009 British Open champion Stewart Cink are currently leading the field on five-under, one shot ahead of their U.S. compatriots Charley Hoffman, Vaughn Taylor and Kevin Chappell.

It was one bad hole and what's crazy about this game
--Kevin Na

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Jhonattan Vegas of Venezuela and Masters runner-up Adam Scott of Australia are also on four-under.

Na, who has won four tournaments in his pro career including one on the Asian Tour, started by hitting his tee shot at the ninth into the woods and declaring the lie of the ball unplayable.

A second tee shot was then also hit into the woods before several attempts to play the ball out of the trees.

On the 13th shot of the hole, Na eventually found the relative safety of the rough before finding the cup three strokes later.

"I feel like I'm playing somewhat decent and it was one shot, actually two, but one that started the whole thing and it was one bad hole and what's crazy about this game," Na told the official PGA Tour web site.

"One bad hole can basically shoot you out of the tournament. That's what I just did. Let's say I made five or six on that hole, I'm looking really good at this tournament, thinking I got a morning tee time and go low tomorrow."

The tournament at the Oaks Course club in San Antonio is due to finish on Sunday.