Novak Djokovic 'uncomfortable' after Tommy Robredo upset in Cincinnati Masters

Novak Djokovic of Serbia celebrates after winning against Gael Monfils of France during Rogers Cup at Rexall Centre at York University on August 6, 2014
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Top-seeded Novak Djokovic admits that he "doesn't feel comfortable" at the moment after suffering a surprise defeat against Tommy Robredo in the Cincinnati Masters.

Novak Djokovic has admitted that he doesn't "feel comfortable" following the shock defeat to Tommy Robredo on Thursday.

The top seed was sent crashing out of the Cincinnati Masters after losing in straight sets in the third round.

Djokovic told reporters: "It's unfortunate, but it's more than obvious I'm not playing even close to what I'm supposed to play.

"I have to keep on working and trying to get better for the US Open. I just don't feel comfortable. That's it."

The Serbian will now head into the US Open on August 25 on back-to-back defeats after losing to Jo-Wilfred Tsonga in Toronto last week.

Thirty-two-year-old Robredo is currently ranked number 224 in the world; his highest ever ranking was number 16.

Tommy Robredo of Spain reacts after defeating Roger Federer of Switzerland in their fourth round men's singles match on Day Eight of the 2013 US Open at USTA Billie Jean King National Tennis Center on September 2, 2013
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3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
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10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
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