Nadal, Federer cruise into Shanghai Masters quarterfinals

Alexander Zverev of Germany swings his racquet in frustration after losing a point to Juan Martin del Potro of Argentina during their men's singles match of the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)
Rafael Nadal of Spain hits a forehand shot against Jared Donaldson of the United States during their men's singles match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Wednesday, Oct. 11, 2017. (AP Photo/Andy Wong)
Spectators take photos of Roger Federer of Switzerland after winning his men's singles match against Alexandr Dolgopolov of Ukraine in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)
General view of Qizhong Forest Sports City Tennis Center during the men's singles match between Rafael Nadal of Spain and Fabio Fognini of Italy in the Shanghai Masters tennis tournament in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)
Juan Martin del Potro of Argentina celebrates after defeating Alexander Zverev of Germany in their men's singles match of the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)
Spectators looks at a broken racquet after Alexander Zverev of Germany smashed it during the men's singles match with Juan Martin del Potro of Argentina in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)
Marin Cilic of Croatia hits a backhand shot against Steve Johnson of the United States during their men's singles match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Thursday, Oct. 12, 2017. (AP Photo/Andy Wong)

SHANGHAI — Rafael Nadal won his 14th consecutive match to reach the Shanghai Masters quarterfinals, beating Fabio Fognini of Italy 6-3, 6-1 on Thursday.

Fognini occupied Nadal for 63 minutes, nine minutes longer Nadal's second-round match.

Roger Federer, seeded second to Nadal, also was not detained for long as he defeated Ukrainian qualifier Alexandr Dolgopolov 6-4, 6-2.

"Of course it's good news, and especially in this part of the season," Nadal said. "Its better like this than having long matches. You save a little bit more the body.

"It doesn't matter how long you are on court, (the) most important thing is be enough competitive to (handle) all the situations."

Nadal hadn't won an ATP hard-court title in more than three years until the U.S. Open last month, and now he's gunning for his third in five weeks.

Nadal saved both break points he faced in the round-of-16 match, in the fourth game of the second set.

In the quarterfinals, Nadal will play sixth-seeded Grigor Dimitrov of Bulgaria, who got past Sam Querrey of the U.S. 6-3, 7-6 (3).

Federer will play Richard Gasquet in the quarterfinals.

Juan Martin del Potro advanced by overcoming third-seeded Alexander Zverev 3-6, 7-6 (5), 6-4.

Del Potro required four match points - two on Zverev's serve in the ninth game, two on his own serve in the 10th game - to win this first encounter against the German.

Del Potro, who lost his serve for the only time in the match in the second game, won nine of his 15 service games at love.

Zverev, in the hunt for a sixth ATP title of the season, lost his composure after netting a backhand to surrender his serve in the fifth game of the third set to the Argentine. He repeatedly smashed his racket until it was a mangled mess.

"For me, it's impossible to lose a match when I've only been broken one time," Zverev said. "The game where he broke me I was up 40-15 and I was just unfocused there."

Del Potro knew Zverev's reaction to losing serve was likely a good omen.

"I saw his frustration, for sure," del Potro said. "He's still very young and has to keep learning. He has everything to be in the top of the game."

Del Potro will John Isner of the U.S. or Viktor Troicki of Serbia in the last eight on Friday.

Fourth-seeded Marin Cilic will face Albert Ramos-Vinolas of Spain.

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