Hello and welcome to LIVE updates of the first singles match of Day 5 at the 2020 ATP Tour finals. Dominic Thiem has already qualified for the semi finals but will be hoping to maintain his 100 per cent record and overall momentum against Andrey Rublev, who is out of the tournament after losing his first two matches.

GAME, SET AND MATCH! – THIEM 2-6 5-7 RUBLEV. The tournament debutant, Rublev signs off with a maiden win at the third time of asking. He cruises through the dead rubber and seals a straight sets triumph in one hour and 14 minutes. It’s been a super year for the world number eight and that was a good way to conclude it. Thiem was flat throughout and clearly not fired up given he had already qualified as group winner. His 300th career win will have to wait and he’ll hope it comes in Saturday’s semi finals.

BREAK! – THIEM 2-6 5-6 RUBLEV. Thiem implodes from 40-0 up and it may well cost him the match. He coughs up two double faults, but manages to save three break points before finally succumbing on a fourth with a volley wide. Rublev will now serve for the match after what was the probably the best game of tennis in the contest.

THIEM 2-6 5-5 RUBLEV. That’s more like it. Rublev halts his lull with a quick-fire love hold.

THIEM 2-6 5-4 RUBLEV. Thiem seems to have decided he wants to raise it and get back on terms. He makes it eight points on the spin with a dominant service game. Pressure on Rublev to stay in the set now he seemed on the verge of winning now.

BREAK! – THIEM 2-6 4-4 RUBLEV. Thiem slaps some tame errors off both wings into the net. Rublev seems to have it in the bag, but he’s getting tight. He sees a lead flitter away and dumps two very poor shots into the net to allow Thiem to break back.

THIEM 2-6 3-4 RUBLEV. The world number three stays in contention courtesy of some solid serving.

THIEM 2-6 2-4 RUBLEV. Too easy. Thiem looks as I he just ants to get this over with. Rublev holds to love inside 60 seconds.

THIEM 2-6 2-3 RUBLEV. Domi stays in touch with a much more routine service game. This is all about Rublev keeping his nerve now. Thiem isn't about to really crank it up a few gears unless the Russian starrts handing it to him.

THIEM 2-6 1-3 RUBLEV. There’s a first glimmer of trouble on the Rublev serve. Thiem misses a big forehand to crank up the heat at 0-30 and from there Rublev regains his mojo. The worlds number eight backs up his break and is looking in very good shape.

BREAK! – THIEM 2-6 1-2 RUBLEV. Rublev’s appetite for this is humongous. Thiem leans on some big serves, but is pegged back to deuce from 40-15 up. The world number three then has to fend off a break point when Rublev corks a sumptuous backhand winner down the line. The Austrian saves it with an ace down the middle T and then outlasts a crosscourt backhand examination to stave off another. When a third comes along, he makes a positive move forward, but is undone when Rublev drills a forehand winner down the line on the run.

THIEM 2-6 1-1 RUBLEV. Ace number 7 ensures Rublev maintains his charge. Thiem claws back two points from 40-0 down but is undone by a lovely forehand-crisp volley combo.

THIEM 2-6 1-0 RUBLEV. Thiem isn’t happy with his level. He Looks to his team. Whatever they gesture, it seems to help a bit. He finds some big serves from 15-15 and gets Set 2 off to a much better start.

SET! - THIEM 2-6 RUBLEV. A super opener from Rublev as he easily serves it out on his second set point after just 25 minutes. Thiem has lacked any intensity.

THIEM 2-5 RUBLEV. Thiem doesn’t fancy the breadstick. He brushes aside another double fault to slap an ace down the middle T and pose the serve-out question.

THIEM 1-5 RUBLEV. Andrey is crushing some brutal serves out there. He slams down a succession of them to cruise through a love hold. He’s already one game away from the set.