Anger, boos, tears and an accusation of sexism overshadowed a remarkable victory by Naomi Osaka, a rising star who became the first tennis player born in Japan to win a Grand Slam championship.
Osaka soundly defeated her childhood idol, Serena Williams, 6-2, 6-4, in the women’s final of the United States Open on Saturday, blocking Williams from winning a record-tying 24th major singles title.