GAME, SET AND MATCH! - SOCK 2-6 6-7 6-1 7-5 4-6 THOMPSON. The unseeded Aussie pulls off the surprise after Sock had threatened to come through from two sets down. The American bows out after a real battle lasting almost four hours.
Jack Sock - Jordan Thompson
US Open men - 28 August 2017
US Open – Follow the Tennis match between Jack Sock and Jordan Thompson live with Eurosport. The match starts at 23:00 on 28 August 2017. Our live coverage lets you follow all the key moments as they happen.
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SOCK 2-6 6-7 6-1 7-5 4-5 THOMPSON. The momentum continues to shift as Thommo finds a second wind to break back and then hold. It's going to be tough on the guy who loses this epic.
BREAK! - SOCK 2-6 6-7 6-1 7-5 4-3 THOMPSON. Sock hits a purple patch as Thompson flags at the worst possible time. The American is looking good to pull off a great escape now.
BREAK! - SOCK 2-6 6-7 6-1 7-5 2-3 THOMPSON. And there's that twist in an instant. Thompson can't back up the break and Sock makes him pay from deuce.
BREAK! - SOCK 2-6 6-7 6-1 7-5 1-3 THOMPSON. Thommo has been under the cosh for the best part of the last 80 minutes, but he strikes first blood in the decider. It's been a fiercely competitive battle with neither player willing to lie down. There could yet be more twists in this one though.
SET! - SOCK 2-6 6-7 6-1 7-5 THOMPSON. He can indeed. Sock holds to 30 and takes the contest into a fifth.
BREAK! - SOCK 2-6 6-7 6-1 6-5 THOMPSON. After flirting with an exit just moments ago, Sock comes out all guns blazing and breaks at a hugely significant moment in the fourth. Now, can he hold his nerve to serve it out and force the decider?
SOCK 2-6 6-7 6-1 5-5 THOMPSON. Could that be a pivotal game? Sock saves two match points before digging out a hold to stay alive.
SET! - SOCK 2-6 6-7 6-1 THOMPSON. Sock serves out the Set 3 breadstick and looks to have significant momentum. Thommo is suddenly up against it in the shape of both the crowd and a revitalised opponent.
SOCK 2-6 6-7 4-1 THOMPSON. Signs that Sock is finding some belated consistency and rhythm - but he was also up a double break in Set 2 before wobbling. Can he stay focused to reduce the arrears this time?
SET! - SOCK 2-6 6-7 THOMPSON. You can hear a pin drop. The tie break follows the same pattern as a topsy turvy set with both players blowing chances to take it before the Aussie snares it at the fourth time of asking 14-12. He leads 2-0 and the USA's Sock is in big trouble.
SOCK 2-6 THOMPSON.
Interesting. Jack Sock, the 13th seed American, is in a spot of bother on home soil. He's just lost the first set, with Aussie Jordan Thompson looking mighty impressive.