Good evening, and welcome to our LIVE coverage of Jack Sock v Jo-Wilfried Tsonga.

HIGHLIGHTS: Jo-Wilfried Tsonga booked his third trip to the US Open quarter-finals by beating American Jack Sock in four sets in their fourth-round match at Flushing Meadows on Sunday.

A chance for Sock at 5-5 in the third to break the Tsonga serve - but the Frenchman follows it with an ace.

Tsonga 6-3 6-3 2-3 Sock: Sock has an early break in the third set, and he has to wait to begin his service game because, as always, people are wandering around in the stands.

Tsonga 6-3 6-3 Sock: Well, that was a jinx. Tsonga wraps up the second set 15 minutes later. Too many errors here from Jack Sock.

Tsonga 6-3 3-2 Sock: Jack Sock is digging in now after letting the first set slip away from him. 31 minutes gone so far in the second set.

Tsonga 6-3 1-1 Sock: Sock is forcing errors on the Jo-Wilfried Tsonga forehand to hold serve.

Tsonga 6-3 Sock: That's a quick first set for Jo-Wilfried Tsonga, breaking the Sock serve with some great work on the forehand and then holding to take the lead in 34 minutes.

Tsonga 4-3 Sock: All with serve so far in this opening set.