Tennis great Serena Williams was at first sad to hear Ashleigh Barty was stepping away from the game at a very young age but added that she is also happy for the Australian and what’s to come next for her in her life. Three weeks after withdrawing from the Masters events in Indian Wells and Miami, Barty announced a shock retirement from tennis. Williams and Barty clashed two times and twice the American ended on the winning side. Their two meetings came at the Grand Slam level as Williams beat Barty at the Australian Open in 2014, before also beating the Australian at the French Open four years later. “@ashbarty I can’t lie I was sad to read your decision but also happy for your new chapter. Always your fan close up and afar. Sending all my love,” Williams tweeted. Barty retires, Wil …