Caroline Wozniacki was delighted to finally produce on the big stage after she beat Maria Sharapova to reach the quarter-finals of the US Open.

The Dane has struggled for form recently but finally showed what she can produce when at her best. She made it to the final eight of a grand slam for the first time since the Australian Open in 2012 thanks to a 6-4 2-6 6-2 win.

Wozniacki produced some brilliant tennis in the opening set but she was pegged back by her Russian opponent. After winning the second set, Sharapova took too long after a ten-minute break and seemed to be struggling with the heat.

In the fourth game of the final set, Wozniacki pounced to move into the lead before sealing victory with a well timed backhand.

She will now play 13th seed Sara Errani in the next round and Wozniacki admitted she was elated to beat Sharapova.

“It means so much to me. Things have been a bit up and down this year. To win against a champion like Maria is an unbelievable feeling,” she said.

Errani progressed after beating qualifier Mirjana Lucic-Baroni on Sunday. Errani only hit four winners but Lucic-Baroni was guilty of 69 unforced errors to give Errani the 6-3 2-6 6-0 victory.

Wozniacki is now 4.50 to win the US Open at Flushing Meadows but she could still face the likes of Serena Williams and Eugenie Bouchard, who are still in the competition.