Ash Barty has closed the curtain on her brilliant career. The reigning Wimbledon and Australian Open champion announced her shock retirement at age 25 in an interview with former doubles partner and good friend Casey Dellacqua she posted on Instagram. Barty beat Danielle Collins in the AO final to become the first Aussie to win the Melbourne major singles title in 44 … [Read more...] about World No. 1 Ash Barty Retires