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NEW YORK (AP) — Serena Williams was penalized a game for calling the chair umpire a thief during an extended argument as the U.S. Open women’s final descended into chaos, with fans booing and play delayed before Naomi Osaka wrapped up a 6-2, 6-4 victory for her first Grand Slam title.

The biggest issue for Williams on the scoreboard Saturday was that she was outplayed by a younger version of herself in Osaka, a 20-year-old who is the first player from Japan to win a major singles tennis title.

naomi osaka Naomi Osaka Beats Serena Williams To Win US Open Final

NEW YORK, NY – SEPTEMBER 08: Naomi Osaka of Japan poses with the championship trophy after winning the Women’s Singles finals match against Serena Williams of the United States on Day Thirteen of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 8, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images)

What this match will forever be remembered for is the way Williams clashed with chair umpire Carlos Ramos, demanding an apology after he initially warned her for receiving coaching, which is not allowed during Grand Slam matches.

serena williams umpire Naomi Osaka Beats Serena Williams To Win US Open Final

NEW YORK, NY – SEPTEMBER 08: Serena Williams of the United States reacts to umpire Carlos Ramos after her defeat in the Women’s Singles finals match to Naomi Osaka of Japan on Day Thirteen of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 8, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

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