The Argentine world No 4, who had already been suffering with a virus, lost his footing at 5-5 in the first set against Croatia's Borna Coric.
The third-seeded del Potro trailed in the first set and in the tiebreaker but rebounded both times to beat Richard Gasquet 7-5, 7-6 (7).
Trump signs bills aimed at increasing drug price transparency
Health and Human Services Secretary Alex Azar says the bills give patients the right to know about ways to pay the lowest price. On Wednesday, the president signed two pieces of legislation aimed at increasing transparency in prescription pricing.
The 31-year-old Serb was playing his first match on the ATP tour since lifting his 14th Grand Slam title at the U.S. Open last month and looked in complete control as he won 34 of 40 points on his first-serve to book a place in the last 16.
He will take on seventh-seeded Kevin Anderson of South Africa, whom he leads 6-1 on head-to-head.
Fourth-seeded Alexander Zverev of Germany also advanced to the quarterfinals by pasting Alex de Minaur of Australia 6-1, 6-4.
The German fourth seed will next play 11th seed Kyle Edmund.
Ovchinin and his colleague, NASA's Nick Hague were supposed to dock at the orbiting outpost six hours after the launch. In a statement , NASA Administrator Jim Bridenstine confirmed he had been informed the two crewmembers were safe.
The report recommended emerging economies take steps to insulate themselves from a further exodus of funds from investors. The report was written before the United States, Canada and Mexico finalized an updated trade deal.
Callum is the third named storm of the 2018/19 season, following Ali and Bronagh which both camer in September. There is the risk of localised flooding, tricky conditions on the roads with surface water and spray.
Amazon has soared 50 percent this year, but its stock has fallen 14 percent from its all-time high in early September. Technology companies were among the losers, with the Nasdaq Composite dropping more than 2% to 7,575.34.
He didn't say if he suspected any of the current crew - an American, a Russian and a German aboard the station. Cosmonauts Vladimir Titov and Gennady Strekalov separated the capsule and landed safely near the launchpad.
She insisted Evans has told the truth and disputed that she either showed Weinstein her breasts or misled investigators. Weinstein's defence lawyer later suggested, outside court, that Ms Evans should be criminally prosecuted for perjury.
Manchester United and Arsenal will miss out on a top-four finish in the Premier League this season, according to Matt Le Tissier. Who will win the title? " I don't think Arsenal, (will challenge for the title )" said Neville on Sky Sports .
Trump said earlier this week that he thought the central bank was moving too quickly with a series of planned interest rate hikes. On Wednesday, the Dow plunged more than 830 points as investors anxious that rising interest rates might slow economic growth.
Then, in 2016, Hawking, along with the co-authors of his latest study, said they may finally be on to something. The difficulty is that if you throw something into a black hole it looks like it disappears.
The Marine Corps and Air Force have confirmed the grounding of their F-35s is a precaution so the aircraft can be inspected. Mr DellaVedova said: " The primary goal following any mishap is the prevention of future incidents ".
Dakota Johnson addresses pregnancy rumours on 'Ellen'
The balloon release led many to believe that the party was a gender reveal party for Johnson's supposed pregnancy. Onlookers spotted a bunch of blue balloons let up in the air and immediately presumed she is pregnant with a boy.
Kanye West Rambles Like Trump In White House Meeting
West, a Chicago native, said he and the president will discuss ways to combat the Windy City's ongoing gun violence epidemic. West said he was diagnosed with bipolar disorder, but then that he was misdiagnosed, and was simply sleep-deprived.
Malaysia To Abolish Death Penalty, Says Minister
The PNG Government reactivated the use of capital punishment in 2013 after a spate of violent killings drew worldwide attention. Prior to this, Liew also said that the government is looking to repeal the Sedition Act 1948 and other "draconian laws" .