World number two Simona Halep and two-time champion Venus Williams tumbled out of the US Open, but Maria Sharapova bucked the upset trend that rocked the women's draw. Croatian Mirjana Lucic-Baroni, a former phenom now a 32-year-old veteran who had to fight through qualifying, shocked second-seeded Halep, the French Open runner-up, 7-6 (8/6), 6-2. "It's incredible, amazing, I feel goofy," said Lucic-Baroni, who reached a Grand Slam fourth round for the first time since making it to the 1999 Wimbledon semi-finals as a 17-year-old. The reward for the 121st-ranked Lucic-Baroni is a fourth-round meeting with 13th-seeded Italian Sara Errani, who thwarted Williams 6-0, 0-6, 7-6 (7/5).
The Ebola epidemic that has killed more than 1,500 people across West Africa spread to a fifth country in the region on Friday with the first confirmed case of the deadly virus in Senegal. The case marks the first time a new country has been hit by the outbreak since July and comes a day after the World Health Organization warned the number of infections was increasing rapidly. On Friday, scientists writing in the journal Nature said 18 lab monkeys given high doses of the Ebola virus fully recovered after being given the prototype drug ZMapp, which reversed bleeding in the animals. ZMapp has been given to a handful of frontline health workers who have contracted Ebola, two of whom have recovered, and two of whom have died.
Britain raised its terror alert level Friday over fears of possible jihadist attacks as the United Nations said the number of refugees from the Syria conflict now tops three million. British Prime Minister David Cameron told reporters there was "no doubt in my mind" that jihadists from the Islamic State (IS) group in Iraq and Syria had their sights set on targets in Europe. Despite the move, White House spokesman Josh Earnest said Washington had no plans to follow suit, but US national security officials had been in close contact with London on the issue. US President Barack Obama has admitted that he has no immediate strategy to tackle advancing IS jihadists.