Tennis: Djokovic gets out of jail to reach Melbourne semis as Musetti retires

Novak Djokovic moves closer to a record Australian Open title. He advanced after Lorenzo Musetti retired injured while leading. Iga Swiatek's Grand Slam bid ended with a loss to Elena Rybakina. Jessica Pegula also reached the semi-finals. Djokovic expressed sympathy for Musetti's unfortunate situation.