Azarenka ends Hantuchova's run
Victoria Azarenka will face Flavia Pennetta in the semi-finals of the US Open after breezing past Daniela Hantuchova in straight sets.
The second seed had struggled in her previous two matches at Flushing Meadows - edging past Alize Cornet and Ana Ivanovic - but she looked in better form under the lights on Arthur Ashe.
Azarenka got the better of three straight breaks of serve to start the match and pulled away to take the first set.
Hantuchova made a stronger start to the second, winning the first two games, but back came Azarenka with a run of five games in a row.
She suffered a minor blip when she was broken serving for the match, throwing in a double fault, but she hit back straight away to win 6-2 6-3 in an hour and 16 minutes.
Pennetta had earlier joined Serena Williams and Li Na in the last four by overcoming her fellow Italian Roberta Vinci 6-4 6-1.
Azarenka said: "It's amazing to see such great players in the semis. Flavia has been through such a lot and to see her doing so well is incredible and I can't wait to play against her.
"Everybody looks much fitter, everyone's really taking care of their bodies, and it's taken the sport to the next level.
"I'm really excited to be in the semi-finals. New York is one of my favourite places to play. It gives me so much energy.
"Every time I want to go out and fight. I play like a kid here."