Tunisia's Ons Jabeur made the US Open quarter-finals for the first time on Sunday with a 7-6 (7/1), 6-4 win over Veronika Kudermetova.
Wimbledon runner-up Jabeur, the fifth seed, will face unseeded Australian Ajla Tomljanovic, who ended the career of Serena Williams in the third round, for a place in the semi-finals.
In nine previous appearances in New York she had not got beyond the third round.
"Crazy, crazy match," Jabeur said after her win on Shelby Rogers of the United States on Friday.
