Shanghai Masters: Nadal grinds out tough win over Dmitrov

Sixteenth seed Juan Martin del Potro recovered after dropping the first set to beat Viktor Troicki 4-6 6-1 6-4. Del Potro, who has undergone surgery on both wrists, conferred with a trainer as he repeatedly shook his wrist.

"I saw his frustration, for sure". "I felt something wrong in that moment, but I continued to play, just playing (backhand) slices just to finish the match. If not, I will be nearly dead because he is going to go for the shots". I know that I need to be focused with my serve again, and I need to play aggressive and don't let him play from comfortable positions.

Federer, the Swiss world number two, plays Richard Gasquet in the last eight on Friday after Gasquet outlasted fellow Frenchman Gilles Simon in a marathon three-setter.

And then came the turning point - and a flash of anger from third seed Zverev - as he yielded the crucial service break to go 3-2 down in the third set. Federer claimed two more breaks in the next to seal the deal in an hour and 18 minutes.

The Croat, who has yet to drop a set in this year's tournament, served 10 aces as he registered a 6-3 6-4 win.

Nadal, enjoying a late-career flourish, defeated good friend Dimitrov on his way to winning the China Open on Sunday, his sixth title of the season.

Here, Dimitrov extended their quarterfinal to a third set when he rebounded from a 4-2 deficit to win the second-set tiebreaker. "Of course, being able to win the US Open, Beijing, and being in the semi-finals here ..."

"I have been dealing with all my injuries in the past, and now it's time to take care of my body, see what the MRI says or what the doctor says".

The victory ensured that the pair, who have won two Grand Slams and six titles together, qualified for the ATP World Tour Finals in London next month.

World number five Cilic secured his place in the semi-finals with a routine victory over Spain's Albert Ramos-Vinolas.

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However, on his return to action he immediately broke Troicki's serve and went on to win.

  • Angelo Rivera