2 Jannik Sinner in the Australian Open Semifinals Friday morning. Fans can watch this matchup for free online by using the free trials offered by DirecTV and Fubo TV. Djokovic has played at a high level throughout the Australian Open, as he enters this match with a 5-0 record. Notably, Sinner has not been forced to play a fifth set at the Australian Open. Fans can watch the Australian Open Semifinals for free online by using the free trials offered by DirecTV and Fubo TV.