Lydia Ko plays a shot during the final round of the Evian Championship on Sept. 13 in Evian-les-Bains, France.Stuart Franklin/Getty Images
Lydia Ko won the Evian Championship on Sunday to become the youngest major champion in LPGA Tour history.
The South Korean-born New Zealander closed with an eight-under 63 for a six-stroke victory over Lexi Thompson at the final major of the season.
Ko is 18 years 4 months 20 days. She eclipsed the record set by American Morgan Pressel at 18 years 10 months 9 days in the 2007 Kraft Nabisco Championship.
Ko finished at 16-under 268 for her fourth victory of the year and ninth on the tour. Thompson shot a 70.
China's Shanshan Feng was third at eight under after a 70. South Korea's Lee Mi-hyang, the third-round leader, finished with a 74 to drop into a tie for fourth with compatriot Ilhee Lee (70) at seven under.
Ko has been setting records even before she turned professional two years ago.
Tipped as a future great of the game, she was already the youngest winner on the Tour after her win at the Canadian Women's Open in 2012, and the youngest player of either gender to reach the No. 1 spot when she did it earlier this year.
"Everyone won't be asking me when I'll win my first major because it's done," said Ko, who was two shots off the pace heading into the final round.
Walker Cup
Lytham St Annes, England
Britain and Ireland won the Walker Cup with its highest-points total, beating the United States 16 1/2-9 1/2 at Royal Lytham and St Annes.
Jimmy Mullen won all four matches he played in the two-day biennial amateur event, teaming with fellow Englishman Ashley Chesters to beat Beau Hossler and Denny McCarthy 3 and 2 in the morning foursomes and topping McCarthy 3 and 2 in singles. Chesters earned 3 1/2 points. He beat Jordan Niebrugge 3 and 1.
Europe has won seven of the past 14 matches to cut the Americans' series lead to 35-9-1.
KLM Open
Zandvoort, Netherlands
Belgium's Thomas Pieters won the KLM Open for consecutive European Tour victories, closing with a five-under 65 for a one-stroke victory.
The 23-year-old Pieters, the Czech Masters winner Aug. 30 in his last start, had a 19-under 261 total at Kennemer. England's Lee Slattery bogeyed the final hole to tie for second with Spain's Eduardo de la Riva. Slattery had a 68, and De La Riva shot 63.
Tom Watson shot a 68 to tie for 47th at seven under.