Ko secures landmark victory
New Zealand teenager Lydia Ko has claimed her first title as a professional after birdieing the 18th to win the Swinging Skirts LPGA Classic at Lake Merced in California.
Just three days after turning 17, the South Korean-born Kiwi shot a three-under par final round of 69 to finish on 12-under, one shot clear of Stacy Lewis.
The victory completed an amazing week for Ko, who was named in Time's magazine list of the world's 100 most influential people on Thursday.
Having made a slow start to her final round in California, bogeying the fourth, Ko then began a run of three birdies in four holes at the sixth.
Bogeys at seven and 10 took her back to the pack but she went two clear with birdies at 13 and 14.
Lewis picked up a shot at 16 to move within one of Ko, and she was joined by Jenny Shin when the South Korean birdied 17.
But Shin had to settle for third place after a par at the last and, although Lewis managed a four at the par-five closing hole, Ko also made birdie to wrap up victory.
The World No 4 was claiming her third LPGA title and first US success, having won the 2012 and 2013 LPGA Canadian Women's Open as an amateur.
Dutchwoman Dewi Claire Schreefel has won $100,000 for her hole-in-one at the 12th, acing the 157-yard hole with a seven-iron.