Williams argues with chair umpire; Osaka wins US Open final

  • Naomi Osaka, of Japan, reacts after winning a point against Serena Williams during the women’s final of the U.S. Open tennis tournament, Saturday, Sept. 8, 2018, in New York. (AP Photo/Andres Kudacki)

  • Chair umpire Carlos Ramos talks with Serena Williams during the women’s final of the U.S. Open tennis tournament against Naomi Osaka, of Japan, Saturday, Sept. 8, 2018, in New York. (AP Photo/Adam Hunger)

  • Serena Williams reacts after missing a shot against Naomi Osaka, of Japan, during the women’s final of the U.S. Open tennis tournament, Saturday, Sept. 8, 2018, in New York. (AP Photo/Julio Cortez)

  • Serena Williams takes a break during a changeover against Naomi Osaka, of Japan, during the women’s final of the U.S. Open tennis tournament, Saturday, Sept. 8, 2018, in New York. (AP Photo/Julio Cortez)

NEW YORK — 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.

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