Roger Federer has secured his place in the semi-finals of the ATP World Tour Finals after beating Novak Djokovic in London on Tuesday night.
The Swiss star was too strong for the world number one as he ended the Serbian’s three-year unbeaten run indoors with a straight-sets victory.
Federer’s 7-5 6-2 win means he has now reached the last four at the O2 Arena with one match to spare, having seen off Tomas Berdych 6-4 6-2 on Sunday in his tournament opener.
“It’s always a thrill to come out here, even more so against a great player like Novak,” said 17-time Grand Slam champion Federer.
“It’s a special night for tennis, and a cool atmosphere.”
“The tactic was to mix it up, I have to against Djokovic. I hit it well out wide. I knew it was an important serve to get Novak off the court.”
Djokovic had won his previous 38 matches indoors and had not been beaten at the 02 since 2011.
However, he must now bounce back against Berdych in his final ATP World Tour Finals group match on Thursday.
“You have those days when you are not feeling your best, not even close to the best,” said Djokovic.
“Credit to Roger for mixing up the pace, giving me always a different ball. He used the slice and spin very wisely. He served very efficiently.”
“I made a lot of, lot of unforced errors. I just handed him the win, especially in the second set.”