By Madison Williams The Australian tennis player admitted she is “spent” in terms of her physical and emotional drive. World No. 1 Ash Barty shocked the tennis world on Tuesday night when she dropped a video on Instagram announcing she was retiring at age 25. The three-time grand slam winner just won Wimbledon last summer and the Australian Open in January. She seemed to be on top of her game in her nearly 12-year career. However, Barty noted in her announcement video that she is wanting to pursue her dreams outside of tennis. She was able to complete her dreams in tennis, so it was time for h…