The 20-year-old's exit means Serena Williams remains the last woman to successfully defend the US Open title back in 2014.
Coco Gauff survived late-match drama to keep her US Open title defence alive with a 3-6, 6-3, 6-3 victory over Elina Svitolina on Friday.
Gauff, seeded third, fired 10 aces and needed just 66 minutes to beat 66th-ranked Gracheva. She saved eight break points -- including two with aces in the final game
Gauff was not the only big name going out, as Rybakina crashed to a 3-6 7-6(3) 6-4 defeat by former US Open runner-up Leylah Fernandez.
Tearful Coco Gauff was dumped out of the Olympics Games tennis tournament on Tuesday in a stormy defeat to impressive Donna Vekic of Croatia.
The world number one is just one match away from becoming the first woman to win the tournament in three straight years since Justine Henin in 2007 after a 6-2, 6-4 victory.
World number three Coco Gauff came back from a set down to defeat Ons Jabeur and reach her second French Open semi-final on Tuesday.
Gauff has been outspoken from a young age, and grew up with activism engrained in her DNA, passed on from her grandmother Yvonee Lee Odom, who desegregated her high school in Delray Beach in the early 1960s.
Formidable world number two Aryna Sabalenka blasted past Coco Gauff into the Australian Open final on Thursday to keep her title defence on track.
The 20-year-old's exit means Serena Williams remains the last woman to successfully defend the US Open title back in 2014.
Coco Gauff survived late-match drama to keep her US Open title defence alive with a 3-6, 6-3, 6-3 victory over Elina Svitolina on Friday.
Gauff, seeded third, fired 10 aces and needed just 66 minutes to beat 66th-ranked Gracheva. She saved eight break points -- including two with aces in the final game
Gauff was not the only big name going out, as Rybakina crashed to a 3-6 7-6(3) 6-4 defeat by former US Open runner-up Leylah Fernandez.
Tearful Coco Gauff was dumped out of the Olympics Games tennis tournament on Tuesday in a stormy defeat to impressive Donna Vekic of Croatia.
The world number one is just one match away from becoming the first woman to win the tournament in three straight years since Justine Henin in 2007 after a 6-2, 6-4 victory.
World number three Coco Gauff came back from a set down to defeat Ons Jabeur and reach her second French Open semi-final on Tuesday.
Gauff has been outspoken from a young age, and grew up with activism engrained in her DNA, passed on from her grandmother Yvonee Lee Odom, who desegregated her high school in Delray Beach in the early 1960s.
Formidable world number two Aryna Sabalenka blasted past Coco Gauff into the Australian Open final on Thursday to keep her title defence on track.
"Happy, really proud of the fight I showed today," said Gauff, who had never progressed beyond the fourth round at Melbourne Park in four previous attempts.
