World Tour Finals: Novak Djokovic & Stan Wawrinka into semi-finals

By Piers NewberyBBC Sport at O2 Arena, London
Djokovic beats Berdych: Best 5 shots
ATP World Tour Finals, O2 Arena London, 9-16 November
Coverage: Afternoon sessions (14:00 GMT) and first semi-final (14:00 GMT) on BBC Two & BBC website. Final on BBC Two (18:00-19:00 GMT) and BBC Three (19:00 GMT) & BBC website; live commentary of each match on 5 live sports extra, live text commentary on BBC website

Novak Djokovic brushed aside Tomas Berdych to reach the last four at the ATP World Tour Finals and secure the year-end number one ranking.

The Serb, 27, won 6-2 6-2 to extend his unbeaten run indoors to 30 matches stretching back to 2012.

He tops Group A in London with three wins and will play Kei Nishikori in the semi-finals on Saturday.

Stan Wawrinka will play Roger Federer in the second semi as he won the three games required against Marin Cilic.

Wawrinka, the Australian Open champion, took only 13 minutes to move 3-1 ahead and so ensure he could not be overtaken by Cilic in any of the qualification scenarios.

The Swiss number two went on to win 6-3 4-6 6-3 and return to the last four after his debut appearance 12 months ago.

Number one ranking delights Djokovic

Czech player Berdych, 29, suffered a 17th defeat in 19 matches against Djokovic but made more of a mark than in their last meeting, when he trailed 6-0 5-0 in Beijing last month before grabbing two games.

A similar drubbing appeared on the cards when the Serb raced into a 4-0 lead with two breaks of serve.

After a week of one-sided matches at the O2 Arena there was relief all around when Berdych recovered from 15-30 to get on the scoreboard in game five, but it was hardly a signal of intent.

Djokovic continued to dominate, rolling through the first set in 31 minutes and making it five games in a row as he moved 4-0 clear in the second.

Berdych slowed the two-time champion's progress sufficiently to take him past the hour mark, but Djokovic sealed victory after 69 minutes, and with it the end-of-season number one ranking for the third time in his career.

GB Davis Cup captain Leon Smith on BBC Radio 5 live sports extra
"I think it'll be Novak and Roger in the final - but let's hope we get a third-set match at some point."

"Definitely one of the best," Djokovic said of his performance. "Obviously I hoped I could continue the way I played in the first two matches.

"It's been a long year, a long season, it's an incredible achievement and I want to thank my team and my family and all the people who supported me.

"I'm aware that being number one in the world is the biggest challenge a tennis player can have. It's an incredible feeling and I'm very happy."

Meanwhile, Wawrinka was left to look ahead to Saturday's second semi-final where he will face compatriot Federer.

"I hope I can get a little bit of support because I know people love him here. It's going to be tough for me, but I need to trust myself and go for it," said Wawrinka.

"It was a tough match tonight, it's never easy to play against Marin, he's been having an amazing year. It was not easy, trying to be aggressive. I was trying to serve and volley."

Novak Djokovic
Djokovic guaranteed his year-ending number one ranking with this win
Novak Djokovic and Tomas Berdych
Berdych had to wait until the fifth game before registering a point on the scoreboard
Novak Djokovic celebrates his win
Djokovic won 83% of points on his first serve and 70% on his second serve
Stan Wawrinka
Wawrinka secured his eighth victory over Cilic in 10 meetings to set up a semi-final tie with Federer
Marin Cilic
US Open champion Cilic ended the tournament with three round-robin defeats