Bianca Andreescu beats Serena Williams in US Open final

NEW YORK, NEW YORK - SEPTEMBER 07: (L-R) Bianca Andreescu of Canada is congratulated by Serena Williams of the United States after winning the Women's Singles final match on day thirteen of the 2019 US Open at the USTA Billie Jean King National Tennis Center on September 07, 2019 in the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

NEW YORK — Canadian teenager Bianca Andreescu built a big lead and then held on to upset Serena Williams 6-3, 7-5 in the U.S. Open final for her first Grand Slam title.

Andreescu’s victory Saturday prevented Williams from claiming what would have been her record-tying 24th major singles championship.

This is the second year in a row that Williams has lost in the U.S. Open final.

She has now been the runner-up at four of the seven majors she has entered since returning to the tour after having a baby two years ago.

Andreescu displayed the same sort of big serving and big hitting that Williams usually does. Williams was not at her best, either, getting tight at key moments, including double-faulting on the last point of three games to get broken.

The 19-year-old Andreescu is the first woman to win the U.S. Open in her tournament debut in the Open era, which began in 1968.

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