2018 US Open Women's Singles :Naomi Osaka defeated Serena Williams
Flushing Meadows, United States
The 2018 US Open Women's Singles final was the championship tennis match of the Women's Singles tournament at the 2018 US Open.
It was contested between Serena Williams and Naomi Osaka, seeded 17th and 20th respectively.
Osaka defeated Williams in straight sets, 6-2, 6-4 in one hour and 19 minutes.
It was Williams' first US Open after a 12-month hiatus to give birth to her first child in September 2017, and second attempt since her pregnancy (after that year's Wimbledon) to equal Margaret Court's all-time record of 24 Grand Slam titles.
Osaka was the first Japanese player to contest a Grand Slam women's singles final, and was attempting to become the first able-bodied Japanese player, male or female, to win a Grand Slam singles title.
The pair met only once previously, with Osaka winning in straight sets in the first round of the 2018 Miami Open.
Osaka was relatively unknown, beginning the year ranked No. 68, having only entered the top 50 briefly in 2016, and having neither been seeded in the main draw of a Grand Slam tournament nor advanced beyond the third round.