champion and progressed to the third round with straight set wins against Alexander Bublik and Dustin Brown. He dropped his first set of the tournament to Fabio Fognini but proceeded to the fourth round in four sets. Murray continued to the quarter final with a straight set victory against Benoit Paire. However, he was defeated in the quarter-final by Sam Querrey in five sets. Murray missed the Canadian Open and the Cincinnati Masters due to his hip injury, which led to him losing his No. 1 ranking to Rafael Nadal. His injury then forced him to withdraw from the 2017 US Open two days before the start of the tournament, making it the first Grand Slam tournament he had missed since the 2013 French Open. Murray then withdrew from the Asian hard court swing and said it was "most likely" that he would not play in a professional tournament again in 2017. Ultimately he did indeed not play again, withdrawing from Paris which left him unable to qualify for the 2017 ATP Finals; that November, as a result of his inactivity, his ranking fell sharply to No. 16, his lowest ranking since May 2008. Murray returned to the court to play a charity match against Federer in Glasgow and expressed his hope to return to the tour in Brisbane. The following week, he and Ivan Lendl announced that they had mutually ended their coaching arrangement for a second time. 2018: Hip surgery, out of top 800, and return to tour Murray withdrew from the Brisbane International and Australian Open due to hip injury. In a post on Instagram, Murray explained that rehab was one option for recovery. He added that hip surgery was also an option but that the chances of a successful outcome were not as high. On 8 January, Murray announced on Instagram he had undergone hip surgery. In March, Murray lost his British No. 1 ranking for the first time since 2006, to Kyle Edmund. Later that month, Murray said he was making progress after several days of playing at the Mouratoglou Academy in Nice after posting pictures of himself practising against Aidan McHugh, a British junior player, on Instagram. He then announced he would play his first ATP tournament since hip surgery at the Rosmalen Grass Court Championships in June, although he later withdrew saying he was not quite ready and wanted to be 100%. However,