Emma Raducanu has sent a message to Andy Murray after the former world No 1 suffered a worrying ankle injury at the Miami Open. Murray has faced increased questions over his plans to retire from professional tennis this year having admitted recently that he’s ‘likely not going to play past this summer’. That’s led to expectations that this year’s Wimbledon will be Murray’s last as he heads for retirement. However, Murray’s farewell tour has been dealt a significant blow after he confirmed on social media that he ruptured two ankle ligaments in Miami. The British tennis superstar screamed in ag…