Heartbreak for Lorenzo Musetti fans as the Italian was forced to retire with a suspected leg tear while leading King Novak in the Aussie Open quarters. Musetti was playing the match of his life, up two sets on the 10-time champ, before injury struck. Tough luck for Musetti, who admitted he never imagined being ahead of Djokovic only to be sidelined by pain. Did anyone else think this could've been Musetti's breakthrough? #Sports #Tennis #AustralianOpen