The Argentinian fell awkwardly during the deciding set of his last-eight meeting with Viktor Troicki on Friday, damaging his left wrist. Del Potro, who has undergone surgery on both wrists, conferred with a trainer as he repeatedly shook his wrist.
"It's true that at the end of the second, that tie-break, I made a couple of mistakes with the forehand. I would like to play and be 100 per cent".
Federer subsequently eased past Richard Gasquet in straight sets to book a last-four clash, but it remains to be seen whether Del Potro will be fit to face the Swiss on Saturday. Federer claimed two more breaks in the next to seal the deal in an hour and 18 minutes.
Sixth seed Grigor Dimitrov, who saved match points on Wednesday against Ryan Harrison, had a more comfortable day as he beat American 10th seed Sam Querrey 6-3 7-6 (7-3).
Nadal, who extended his winning streak to 15 matches, pegged Dimitrov back with relentless baseline hitting to take the first set easily.
That isn't the only time his fun has been spoiled by the Spaniard, either, with Dimitrov reaching his first Grand-Slam semi-final at the start of the year at the Australian Open - only for Nadal to be waiting, again defeating him by a single set.
Rafael Nadal will try to reach his second Shanghai final in career.
Here, Dimitrov extended their quarterfinal to a third set when he rebounded from a 4-2 deficit to win the second-set tiebreaker.
"I played a very good match, I don't know how many mistakes I made, but very few", said the 16-time Grand Slam victor and top seed in Shanghai. "Of course, being able to win the US Open, Beijing, and being in the semi-finals here ..."
"I think (it was) a great battle between two players who are playing all the time very focused, very intense points".
"I felt good in the first match", the 36-year-old said.
Fourth seed Marin Cilic and Spain's Albert Ramos-Vinolas go head to head in the other quarter-final.
A STORM hurtling towards Scotland across the Atlantic has been upgraded to a hurricane, prompting concern among Brits. Hurricane-force winds extend out 25 miles from the center and tropical-storm-force winds extend out 70 miles.
This could bring a blast of high winds to the Emerald Isle, particularly the western half of Ireland early next week. Tropical Storm Ophelia is expected to strengthen to a hurricane as it spins far out over the Atlantic.
Twitter took down the video, saying a remark Blackburn made about opposing abortion was inflammatory, but later recanted. The interview with Sandberg came during a multi-day visit to Washington that included meetings with U.S. lawmakers.
The blue Wagon R of Delhi's chief minister Arvind Kejriwal has been stolen near the high security zone like the Secretariat. It became iconic after Kejriwal used it as a makeshift office while camping near Rail Bhawan to protest in 2014.
While the attention Wednesday was on air power, upcoming US-South Korea naval exercises could further aggravate tensions. Guam, from where the B-1 bombers in Tuesday drills departed, has been a particular target of North Korean threats.
The White House has previously confirmed that Trump's tweets are official statements from the president. Trump (R) shakes hands with Canadian Prime Minister Justin Trudeau during a meeting in the Oval Office.
The court reportedly said it wanted to assess whether the ban would make a difference to Delhi's pollution levels. Possibility of people buying crackers from other states and bursting them in Delhi-NCR can not be ruled out.
Tanveer Ahmed Mir, lawyer for the couple, said they were able to prove that the CBI case had no basis or legs to stand on. Aarushi was found dead inside her room in the Talwars' Noida residence with her throat slit in May 2008.
The Nokia 8 has a full-metal exterior, a QHD display and is powered by the Snapdragon 835 octa-core processor. Early renders of the upcoming Nokia 9 enticed with a bezel-less screen and vertically-arranged dual camera.
Attorney Greg Skordas, who represents Payne, said his client plans to appeal a firing he considers unfair and over the top. In addition to his job as a police officer, Payne was also fired from a separate job as a part-time paramedic.