Oakmont, PA (My Sportsbook) - Brittany Lang bogeyed her final hole Thursday to post a two-under 69 and take a one-stroke lead after the opening round of the U.S. Women's Open Championship.

Lang is not only searching for her first major championship title, but also her first win on the LPGA Tour.

Amateur Kelli Shean led by herself for over nine holes, but three-putted for a bogey on the par-five ninth, her last, to slip to minus-one.

Shean shares second place at one-under 70 with M.J. Hur, Amy Yang and 2008 U.S. Women's Open champion Inbee Park.

They were the only five players to break par in the first round at tough Oakmont Country Club.

Mhairi McKay and Sakura Yokomine are tied for sixth at even-par 71.

Among the top-10 players in the world, top-ranked Cristie Kerr, who won this title in 2007, and world No. 7 Song-Hee Kim are closest to the leaders at plus-one. They are tied for eighth with 12 other players.

Michelle Wie had the toughest day among the top-10 players in the world as she stumbled to a birdie-free, 11-over 82.

Defending champion Eun-Hee Ji posted a six-over 77 and is tied for 73rd.

Lang had a tough time keeping any momentum going through her front nine. After a birdie on the first, she gave that stroke right back with a bogey on the second after her drive found a hazard.

After three straight pars, Lang poured in her second birdie putt at the par- three sixth. However, she tripped to a bogey on the par-three eighth after finding sand off the tee and headed to the back nine at even-par.

Lang got going on the back nine. She birdied the 11th from six feet out to get back to minus-one. Her tee shot on the 14th found the rough, but Lang hit a tremendous approach to six feet.

The 24-year-old rolled that putt in to get to minus-two, which gave her a share of the lead with Shean. Lang drained a long birdie effort on the 15th to move to three-under.

Lang parred the par-three 16th and the short par-four 17th. At the last, she found sand off the tee, and "hit a great recovery out" to about 20 feet. However, as she said, "you just tap it and you got a five-footer coming back."

She missed the par-saving putt, then tapped in for a closing bogey to lead by one.

"I got very lucky today that a lot of the long putts went in," admitted Lang, who tied for fifth as an amateur at the 2005 Women's Open. "If you're hitting the ball good, you can for sure shoot a low score here."

Shean stumbled to a bogey on the 12th, but came back with three birdies in her next four holes to move to minus-two. She parred her next 10 holes to remain atop the leaderboard.

The senior at the University of Arkansas hit her drive left off the ninth tee. Her ball stopped inside a hazard line and in a deep divot. She pitched sideways into the fairway, then hit her third onto the green.

Shean's ball was actually on the putting green, which is connected to the ninth green. She had easily 90 feet for her birdie and rolled that putt past the cup. Shean missed the par putt to slip to minus-one.

"It was the longest putt I have ever had in my entire life," Shean joked. "I just tried to get it somewhere around the hole, then I could maybe make a par putt, which didn't happen. I had a couple of three-putts today out there, and I was expecting that. So the whole time I was just trying to have a good time and taking the experience, and it worked out. It really did."

Hur played the front nine in even par with a birdie on the third and a bogey at No. 6. Around the turn, Hur birdied the 11th to go with eight pars on the back nine to post 70.

Yang bogeyed two of the first three holes, but recovered those lost strokes with birdies on four and nine. She birdied the 11th, but tripped to another bogey at the 15th. Yang birdied the 18th to share second.

Park played the back nine first and started with bogeys on 12 and 13. She erased those mistake with birdies on 14 and 17, but also bogeyed the 18th to turn at plus-one.

On the front nine, Park birdie the par-five fourth and the par-three sixth to get into red figures. She parred the final three holes to share second.

"It played very tough, as always. It was really fun out there," said Park, who won by four strokes at Interlachen Country Club. "The course wasn't that much fun, but I just found a way to work it out. It was nice. My putting was really good today. I changed my putter this week. I think that was a little bit of a positive sign."

Kerr and Song-Hee Kim share eighth with Sophie Gustafson, Wendy Ward, Paula Creamer, Christina Kim, Shi Hyun Ahn, Alena Sharp, Kristy McPherson, Jee Young Lee, Jeong-Eun Lee, Vicky Hurst, Hee Kyung Seo and Shinobu Moromizato.

NOTES: World No. 2 Ai Miyazato carded a two-over 73 and is tied for 22nd with Yani Tseng, Natalie Gulbis, 15-year-old Alexis Thompson, Angela Stanford, who lost in a playoff at the 2003 Women's Open to Hilary Lunke, and Suzann Pettersen, among others.