US Open 2011: Novak Djokovic beats Alexandr Dolgopolov

US Open

Venue: Flushing Meadows, New York
Dates: 29 August - 11 September
Session start times: 1600 & 0000 BST
Tournament coverage: Scores and reports on BBC website plus live text commentaries including all Andy Murray matches; updates and commentaries on BBC Radio 5 live and 5 live sports extra; TV coverage on Sky Sports & Eurosport

Novak Djokovic Djokovic recovered from 4-0 down in the opening tie-break

Novak Djokovic came through a stunning first set tie-break to beat Ukrainian Alexandr Dolgopolov and secure a place in the US Open quarter-finals.

Djokovic saved four set points in the tie-break and needed six of his own on his way to a 7-6 (16-14) 6-4 6-2 win.

The Serbian world number one will next face comaptriot Janko Tipsarevic, who beat Spain's Juan Carlos Ferrero 7-5 6-7 (3-7) 6-5 6-2.

Third seed Roger Federer plays Juan Monaco in Monday's night session.

The winner of that match will face 11th seed Jo-Wilfried Tsonga in the quarter-finals after the Frenchman defeated American eighth seed Mardy Fish 6-4 6-7 3-6 6-4 6-2 in a tense encounter on Arthur Ashe Stadium.Djokovic earlier racked up his 61st win in 63 matches this year but it was not without alarms for the top seed, as Dolgopolov's unorthodox game caused him plenty of problems.

On a windy afternoon on Louis Armstrong Stadium, the 22nd seed kept Djokovic pinned back with his sliced backhand and, after the pair swapped breaks of serve, the first set went to a tie-break.

Dolgopolov was in total control at 4-0 up but then got unlucky with a net cord, and Djokovic came racing back.

Each man would have their opportunities as the crowd reached fever pitch, with Dolgopolov playing one incredible point to see off a set point by picking up a drop shot that seemed impossible, but in the end Djokovic converted his sixth break point and never looked back.

He broke at the start of the second and third sets to see out a straight-sets win that had been anything but straightforward for the first 75 minutes."Winning it was very important," Djokovic said of the tie-break. "That was probably the turning point. After that it was a good performance.

"He played a lot of low balls, slices - I was confused on the court. But it was really exciting."

Djokovic will now meet close friend and Davis Cup team-mate Tipsarevic for a place in the last four.

"It means there's going to be at least one Serbian in the semi-finals, which is great for our country," said Djokovic.

"I think this is the first time I play Janko in a Grand Slam. We are great friends. It's not going to be easy to play him, but look, it's the quarter-finals and we both want to win."

In the men's doubles, Britain's Jamie Delgado and Jonathan Marray could not join compatriots Colin Fleming and Ross Hutchins in the quarter-finals as they went down 6-7 (5-7) 6-2 6-3 to Polish sixth seeds Mariusz Fyrstenberg and Marcin Matkowski.