World number one Andy Murray has sealed his place in the last four at the World Tour Finals in London.

Murray into last four

Murray into last four

The 29-year-old only needed to win one set in his last group match against Stanislas Wawrinka on Friday to ensure he would progress to the semi-finals.

Wawrinka put up a fight in the opening set but ultimately didn’t have enough to stop Murray and went down 6-4 6-2 at the O2 Arena.

Murray has now won 22 matches in a row as he prepares to take on Milos Raonic in the last four on Saturday, while Novak Djokovic is set to face Kei Nishikori in the other semi.

"The first set was tight. There weren't many chances," Murray said.

"I managed to get the break late in the set. In the second set I'd already qualified for the semis, so maybe it was easier for me to play more free than him."