Andy Murray beats Marin Cilic 6-3, 6-2: Murray makes a successful start as he bids to win the season-ending World Tour Finals for the first time

Djokovic hit a ball at his own entourage in anger after losing the opening set against Dominic Thiem, but despite recovering to win 6-7, 6-0, 6-2, he was still frustrated afterwards

Murray is working with Lendl again after being restricted to phone calls at recent events

A look ahead to the ATP World Tour Finals at the O2 Arena

Doubles partnership ends on a low as world's best live up to there ranking

The handiwork might have helped the Scot’s vision, but it could not prevent a 6-4, 6-1 defeat which leaves him with work to do if he is to go through to Saturday’s semi-finals

A look at this week's ATP World Tour Finals in London

Ferrer struggled on his serve throughout, making eight double-fault and losing 6-4, 6-4

Briton so pleased with how his back has coped while practicing for Davis Cup final clash with Belgium, that he is not ruling out victory at the O2 Arena this week

The world No 1 has had a sensational, trophy-laden season and feels he’s in the form of his life, he tells David Cox. However, he believes there’s still room for improvement, off and on the court