round match against James Duckworth in straight sets but admitted post-match that he did not know how long he would be able to play top-class tennis. Murray was defeated in the next round by Daniil Medvedev, at that time ranked 16th in the world. On 11 January 2019, at a press conference just before the 2019 Australian Open, an emotional Murray announced that he could possibly retire from professional tennis due to struggling physically for a "long time", particularly with his hip injury. He said that he had been suffering with hip pain on a daily basis, and that it caused him to struggle with tasks like putting his shoes and socks on. He spoke of the possibility of a second hip surgery, but expressed doubt this would be a viable option to prolong his career, merely allowing him to "have a better quality of life, and be out of pain". He hoped to make it through to Wimbledon, but that the Australian Open could be his final tournament if he was not able to last until the summer, stating: "I'm not sure I can play through the pain for another four or five months". Active and retired tennis players, including Juan Martín del Potro, Kyle Edmund, Bilie Jean King and the other members of the 'Big Four' paid tribute to Murray upon his announcement. Murray entered the singles of the Australian Open, however lost his opening match against 22nd seed Roberto Bautista Agut in a four-hour, five-set 'epic'. At its conclusion, a video montage of tributes featuring other top players Roger Federer, Novak Djokovic, Sloane Stephens and Caroline Wozniacki played in deference to his impending retirement. In his post-match interview, he stated that he was considering a second hip surgery, and had not yet ruled out a return to the sport upon recovering from the operation. Bob Bryan urged Murray to have the "Birmingham hip (BHR)" operation he underwent in August 2018, involving a cobalt-chrome metal cap being placed over the femur with a matching metal cup in the acetabulum (a conservative bone-saving alternative to a traditional Total Hip Replacement). Bryan informed Murray that the BHR would improve his quality of life and may help him return to the professional tennis tour. On 29 January, Murray announced on Instagram that he had undergone hip resurfacing surgery in London and hoped that it would "be the end of my hip