Kevin Na birdied holes 15, 16, and 17 and parred the 18th to stay at 23 under and hold off Nick Watney and win the Justin Timberlake Shriners Hospitals for Children Open on Sunday at TPC Summerlin. Na, a Las Vegas-area resident, has been close many times before but never broken through with that first victory. Making his 132nd career start, Na put together rounds of 66-65 on the weekend to break out of ties following the second and third rounds. The victory moves Na to 33 on the PGA TOUR money list.

Kevin Na may be about to end his PGA TOUR winless drought. He’s going to the 18th hole with a two-shot lead over Nick Watney after birdieing the par-3 17th hole, his second birdie in three holes. Watney has been unable to answer over that span.

Nick Watney stood on the teebox at the par-5 13th two shots behind Kevin Na. He now heads to the drivable par-4 15th tied for the lead. After a birdie on No. 13 cut Na’s lead to one, the leader hit his tee shot into a greenside bunker on No. 14 and went on to bogey the hole, dropping into a tie with Watney at 20 under. Tim Herron is now just one shot behind the co-leaders at 19 under. Two back ar Carl Pettersson, Jhonattan Vegas and Paul Goydos.

If anyone is hoping to make a move at the Justin Timberlake Shriners Hospitals for Children Open, now is the time. The final groups have reached what PGA TOUR Network’s Bob Stevens is calling “the Las Vegas strip.” Holes 13 through 16 at TPC Summerlin are four of the six easiest holes on the course, playing an average of 1.483 strokes under par for the week. That’s a substantial number considering the overall average score for the first three rounds was fractions of a stroke better than 2-under par. Here’s a look at how the top players on the leaderboard have fared this week on the Strip: Kevin Na: 7 under Tim Herron: 4 under Nick Watney: 8 under Carl Pettersson: 6 under Kris Blanks: 9 under Paul Goydos: 7 under Jhonattan Vegas: 6 under

The final group has made the turn at TPC Summerlin and, at 21 under, Kevin Na has a two-shot lead over Nick Watney. Tim Herron and Paul Goydos are three back with five others at 17 under. Watney briefly tied Na at 19 under with a 6-foot birdie putt on the par-4 7th hole but Na answered with a birdie from inside 4 feet to move back ahead. The 28-year old Na, searching for his first PGA TOUR victory in his 132nd career start, added a birdie on the par-5 9th to reach his current number and head to the back nine in the driver’s seat.

At 20 under, Kevin Na is still topping the leaderboard at TPC Summerlin. But there are some new faces applying pressure. Four-time PGA TOUR winner Tim Herron has entered the picture with a quartet of front nine birdies to reach 19 under, one shot behind Na. Herron has a pair of top-10 finishes this season and a third would lock up a 2012 TOUR card for the man currently ranked No. 105 on the money list. Na’s fellow Vegas-are resident and playing partner, Nick Watney, is still two back and has been joined by Tommy Gainey, who has posted back-to-back birdies to get to 18 under. Robert Garrigus, who joins Watney and Na in the final group, is even through six holes and four shots off the pace.

After not taking advantage of some opportunities late in his third round, Kevin Na is working quickly to make up for lost ground. Na has birdied each of the first two holes at TPC Summerlin to reach 19 under and open up a two-shot lead over Kris Blanks, Paul Goydos and Nick Watney in the final round of the Justin Timberlake Shriners Hospitals for Children Open. After knocking his approach on the par-4 1st hole inside 2 feet for a tap-in birdie, Na rolled in a 13-foot birdie putt on the second hole. With the birdie on No. 2, Na has now played every hole on the course at par or better this week. He had gone par-par-bogey on the second hole in Rounds 1-3.

The leaders are about to tee off for their final round at TPC Summerlin. Co-leaders Nick Watney and Kevin Na have a 2 p.m. ET (11 a.m. local time) tee time with Robert Garrigus, who enters the day one shot off the pace. Heading into today’s finale, there have been 1,592 birdies and eagles at TPC Summerlin. Those stroke-saving opportunities at TPC Summerlin can lead to a lot of volatility on the leaderboard, especially if a player gets hot, but doesn’t necessarily allow for someone to come from out of nowhere and win. Those rallies typically require the leader or leaders to stall, and even give shots back on Sunday afternoon. Just one player in the current top 17 (David Duval) has posted a round in the 70s this week, and that was an even-par 71 in Round 2. There have been 16 rounds of 64 or better this week, but a year ago there were just three rounds of 64 or better on Sunday in Vegas. No one inside the top 20 shot in the 70s in that finale. Jonathan Byrd defeated Cameron Percy and Martin Laird in a playoff. Laird opened the final round atop the leaderboard with Byrd one back and Percy two off the pace. This is the wild and unpredictable 2011 season, though. Even if this week doesn’t feature a major comeback, there are still 13 players who start the afternoon within four shots of Watney and Na.

By Chris Dunham, PGATOUR.COM In its brief history, the Fall Series has served stage for players to set the tone for breakout seasons. Dustin Johnson got his first victory in 2008, Matt Kuchar broke a seven-year winless drought in 2009 and Bill Haas had a win and a runner-up finish last year before winning the 2011 FedExCup. Kevin Na hopes to join that list. The 28-year old who grew up in California has 28 top-10 finishes in his 210 career PGA TOUR starts but has still yet to break through with that first victory. He enters Sunday tied at 17 under atop the leaderboard with four-time PGA TOUR winner Nick Watney. “I've been in the final group a bunch of times,” Na said. “It's just another final group. The only thing is, you know, that I haven't won. So the way I look at it, I'm due. I'm just going to go out there and play as best as I can and hopefully I'll catch some good breaks, and hopefully I'll be lifting the trophy.” Oddly enough, the most talked-about shot of the 5-under Saturday for Na was a shot he didn’t take. On the teebox of the drivable par-4 15th hole, Na was in the middle of his swing when something didn’t feel right with the transfer of his weight. He pulled up, intentionally missed the ball, gathered himself and then played the shot. “I'll take it back; it feels decent, and my transition is what I'm always working on,” Na said. “It's always my bad habit is I get quick. And on the way down my transition doesn't feel right, and I try to stop, and obviously it's impossible for me to stop. The only way for me to stop is I have to come up and go over the ball.” Na, who listed a few other instances which he’s pulled up in similar fashion, has talked to rules officials about the move and been given the OK. “I've had a talk with a bunch of rules officials, I mean even a couple years ago,” he said. “I remember at (the Sony Open in Hawaii), It started with the left arm injury and it kind of became a habit. I told them: ‘Hey, guys, I do this all the time. So I'm just letting you know ahead of time that I do this all the time.’ And we had a big talk, and he said ‘It's not a big deal. As long as you don't make contact, it doesn't matter.’” Picking up the momentum he lost on the back nine Sunday will be a big deal for Na. He birdied seven of his last 10 holes in Round 2, then was 4 under on the front nine Saturday before coming in at 1 under on what has played as the easier nine at TPC Summerlin. If he’s able to get back into the same kind of attacking mode that got him to 16 under through 45 holes in Vegas, Na could very well join the ranks of PGA TOUR winners. “Obviously it's going to be incredible (if I win), but that's the last thing I want to do is put more pressure on myself,” Na said. “Like I said, I've been out here eight years knocking on the door and it hasn't happened. I mean I know it's going to happen sooner or later. I'd like to see it happen tomorrow.”

Nick Watney and Kevin Na share the 54-hole lead at the Justin Timberlake Shriners Hospitals for Children Open. The duo, tied at 17 under, will be joined by Robert Garrigus (-16) in the final grouping Sunday at 2 p.m. ET (11 a.m. local time). Watney, a Vegas-area resident, birdied five of his last six holes Saturday as he made a late surge to the top of the leaderboard. Na did most of his damage on the more difficult front nine, managing just one birdie on the back nine as he shot a 5-under 66. Joining Garrigus one shot off the pace will be Kris Blanks. Two back are Tommy Gainey, Paul Goydos and Tim Herron. The six players tied with, or within two shots of Watney entering the final round, have a combined total of six PGA TOUR victories -- four belonging to Herron and two for Goydos. Watney has four, including two this year, as he rebounds from missed opportunities in the PGA TOUR Playoffs for the FedExCup. The Regular Season points leader posted just one top-10 finish in the four Playoffs events, but has wasted no time coming back into form.