Japan’s Naomi Osaka defeated Serena Williams in the women’s singles final of US Open to win her maiden Grand Slam title. It was a dream come true for the twenty-year-old Osaka, who got the better of her idol Williams, in a bizarre and memorable US Open final.

The half-Japanese and half-Haitian star who had dropped just one set en route to Saturday’s final, prevailed 6-2, 6-4 in a dramatic match. Osaka’s memorable triumph prevented Williams from capturing a record-equalling 24th Grand Slam title.

Touted as a generational showdown between an emerging star and the game’s greatest champion, in which Williams engaged into a series of confrontations with the match’s umpire.

The ugly scene overshadowed the dominant performance of Osaka, who quietly wept through a championship ceremony that should have been a coronation of a great new star for women’s tennis. She became the first Japanese player ever to win a tennis major.

With Osaka in control of the match, Williams clashed with chair umpire Carlos Ramos when he handed her game penalty for a string of bad behaviour, including an illegal court-coaching violation and verbal and racket abuse.

“You owe me an apology,” the US superstar said, arguing about the coaching violation. “I have never cheated in my life!”

The game penalty put Osaka 5-3 up in the second set and she kept her cool to pull off a historic win.