AUSTRALIA and South Korea split their matches at the eight-nation LPGA International Crown teams event on Thursday.
World No.1 amateur Minjee Lee combined with seven-time major winner Karrie Webb for a 2-up win over I.K. Kim and Choi Na-Yeon while four-time major winner Park In-Bee and Ryu So-Yeon beat Katherine Kirk and Lindsey Wright 3 and 2.
Lee birdied the fifth and sixth to put Australia ahead and the ninth and 10th for a 2-up edge. Kim birdied the par-5 12th only for Lee to birdie and win the par-3 13th. Choi birdied 15 to again close the gap but Lee sealed victory with a closing birdie.
"Minjee played great. I'm very proud of her," Webb said. "I just rode on her back."
"It was pretty awesome," Lee said. "She gave me a lot of advice on staying mentally tough."
Tseng Yani sank a 10-foot birdie putt on the 18th hole to give last-seed Taiwan a stunning sweep over top-seeded United States.
Tseng's clutch putt gave her and Phoebe Yao a 1-up victory over world number one Stacy Lewis and Lexi Thompson after Teresa Lu and Candie Kung ripped Paula Creamer and Cristie Kerr 4 and 3.
"It certainly hurts to lose on the last hole because we hung in there all day," Lewis said. "We didn't get many putts to fall."
The Americans, never led at any point in any match on day one of the showdown for global bragging rights between eight national teams of four women each.
After three days of four-ball matches, singles matches on Sunday will decide the $US1.6 million ($A1.73 million) event at 6,628-yard Caves Valley Golf Club.
But a US team boasting four of the world's top 12 players, as many as in the entire rest of the field, was already in trouble after they were humbled 4-0 by Taiwan.
"I guess we learned those pairings don't work well," Lewis said. "But there are teams that could get zero points the next two days as well."
Japan beat Sweden 3-1, the Europeans never leading in either match as Ai Miyazato and Sakura Yokomine beat Pernilla Lindberg and Mikaela Parmalid 2 up and Mika Miyazato and Mamiko Higa halved with Anna Nordqvist and Caroline Hedwall.
Nordqvist levelled with a birdie at 16 but she missed a five-foot birdie putt at 18 to win and Mika Miyazato made a four-foot par putt to halve the hole and match.
Yokomine and Ai Miyazato were never more than 2-up and the Swedes trimmed that edge three times, the last when Parmalid birdied 16, but Yokomine's closing birdie won.
"It was an amazing feeling but I was super nervous," Ai Miyazato said. "I had never played in that atmosphere."
Spain defeated Thailand 3-1 as Azahara Munoz and Carlotta Ciganda beat Onnarin Sattayabanphot and Pornanong Phatlum 4 and 2 while Thai sisters Moriya and Ariya Jutanugarn halved with Belen Mozo and Beatriz Recari.
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