World number one Iga Swiatek crashed out of the US Open as American Jessica Pegula finally ended her grand slam quarter-final hoodoo at the seventh attempt.
Karolina Muchova battled through illness to continue her pursuit of the US Open and book a place in the semi-final
Aryna Sabalenka cruised into the semifinals of the US Open with a straight-set win on Tuesday night in New York.
For the first time since 2006, there will be an American in the men's final of the US Open after Frances Tiafoe set up a blockbuster of a semifinal against Taylor Fritz.
Roger Federer says there are still questions to be answered about Jannik Sinner avoiding a suspension after failing two anti-doping tests.
Jannik Sinner set up a blockbusting US Open quarter-final with Daniil Medvedev in a repeat of the Australian Open final.