The world No 1, Ash Barty, has announced her retirement from tennis at the age of 25. The Australian delivered the news through her Instagram account in an interview with Casey Dellacqua. ‘Today is difficult and filled with emotion for me as I announce my retirement from tennis,’ she wrote. Barty bows out as the reigning Australian Open and Wimbledon champion and has held the world No 1 position since winning the 2019 French Open. ‘I have given absolutely everything I can to this beautiful sport of tennis,’ she said.