Novak Djokovic will take on Alexander Zverev in the Australian Open semifinals on Thursday, January 23.Djokovic earned a four-set victory over Carlos Alcaraz (4-6, 6-4, 6-3, 6-4) in the

Novak Djokovic overcame a leg problem, an early deficit and a talented opponent to advance to the Australian Open semifinals as he chases a record 25th Grand Slam.

Novak Djokovic beat young rival Carlos Alcaraz 4-6 6-4 6-3 6-4 in a gladiatorial battle worthy of a title clash to charge into the Australian Open semi-finals on Tuesday and remain in the hunt for a record 25th Grand Slam title.