Naomi Osaka's victory over the 22nd-seeded American Jennifer Brady at a floodlit Rod Laver Arena gave the Japanese third seed her fourth major crown at the age of 23.
Kim birdied her final three holes and tied the record for the largest comeback in a US Women's Open.
Austria's Dominic Thiem finally claims his maiden Grand Slam title with a stunning comeback to beat Germany's Alexander Zverev in a nerve-jangling battle of wills in the US Open final.
Japan's Naomi Osaka, the fourth seed, has overcome her unseeded opponent 1-6, 6-3, 6-3 inside a near-empty Arthur Ashe Stadium at Flushing Meadows.
Austria's Dominic Thiem steamed into his first US Open final after defeating Russia's Daniil Medvedev 6-2, 7-6 (7), 7-6 (5).
Serena Williams crashed out of the US Open semifinals after losing to Belarusian Victoria Azarenka.
Austrian Dominic Thiem beats Australia's Alex de Minaur to advance to US Open semifinals to meet Russian Daniil Medvedev
Despite the loss Rogers will hold her head high after the 27-year-old saved four match points to defeat Petra Kvitova to reach her first US Open quarterfinal.
World number one Novak Djokovic is sensationally disqualified in fourth round after striking a female line judge inadvertently with a ball following a point during a match against Spain's Pablo Carreno Busta.
A dominant Williams sailed through the first set at Arthur Ashe Stadium, closing out the first game with one of seven aces on the match before breaking her unseeded opponent's serve on the second game to take an early 2-0 lead.
Novak Djokovic extends an undefeated run in 2020 to 25 matches as top-seeded Karolina Pliskova was stunned in straight sets by France's Caroline Garcia, the world number 50.
Organisers of the tennis tournament have quietly removed Benoit Paire from the draw, with the Frenchman later confirming on social media that he had tested positive for Covid-19.
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