Where is Grigor Dimitrov vs Jack Sock taking place? 02 Arena, London
When is Grigor Dimitrov vs Jack Sock on? Saturday 18th November, 2017
What time does Grigor Dimitrov vs Jack Sock start? 20:00 (UK)
What channel is Grigor Dimitrov vs Jack Sock on? Sky Sports Arena
It has been a magnificent debut at the season-ending championships for Dimitrov as he romped through the Pete Sampras group with three wins out of three.
The Bulgarian is playing arguably the best tennis of his career and was particularly impressive in his dismantling of Goffin and Carreno Busta for the loss of just four games.
He will have to find his way past an opponent he has only beaten once in four attempts but that victory did come on an indoor hard court back in 2014.
Sock is also enjoying a dream first appearance at the ATP World Tour Finals and is similarly playing at the top of his game, evidenced by his victory against Zverev in the round-robin decider.
The American is full of confidence and will have the belief that he can get past Dimitrov, having already overcome the Bulgarian in Indian Wells this year.
The variety of Sock's game has been key in this tournament and he will once more look to change things up in order to disrupt his opponent's rhythm.
This is a fantastic match-up between two players in a rich vein of form. Dimitrov has played the more eye-catching tennis in the group stages although his attacking style may not quite be so effective against a mobile and resilient Sock. Both will be looking to seize this opportunity of reaching the season-ending final but it is Dimitrov who is marginally favoured to come through in three sets.