Eun-Hee Ji found surprising calm in a double-bogey and a dramatic victory with an improbable birdie.
The 23-year-old from South Korea made a lengthy birdie putt on the 72nd hole to emerge from a Sunday scramble with an even-par 71 and claim the U.S. Women's Open.
She outlasted playing partner and third-round leader Cristie Kerr, who struggled from the outset in the final round and failed in her bid for a second Women's Open title in three years.
"I didn't even dream about winning this tournament, but, well, I did it, and I think this is going to be one of the most memorable moments in my life," Ji said through an interpreter.
U.S. Women's Open Leaderboard
1. Ji (E)
2. Kung (+1)
T-3. Kim (+2)
T-3. Kerr (+2)
5. Lincicome (+3)
Ji recovered from two bogeys in her first four holes and a double-bogey at the 10th, making three birdies over the final six holes to finish at even-par 284 at Saucon Valley Country Club
I watched most of it. I had money on Kim In Kyung but she screwed up the last couple of holes. The NBC coverage was shamefully pro-American and pro-Kerr. Even when she was playing like crap they were cheerleading her on... oh she can do it. "She can win if she birdies the last two holes!" Sorry, if you're playing like shit and losing your temper on course, you're not going to birdie any holes let alone the last two in a US OPEN.