Australian Open: Novak Djokovic goes berserk, smashes racquet before beating Alexander Zverev

Novak Djokovic was full of rage on Tuesday night but showed plenty of grit as the Serb secured one of his gutsiest ever wins.

Japanese superstar Naomi Osaka will face Serena Williams in the Australian Open semi-finals after both players blitzed their way into the final four. 

Osaka brushed past Taiwanese veteran Hsieh Su-wei while Williams got her revenge over Simona Halep, after the Romanian thumped her in the 2019 Wimbledon final.

Novak Djokovic also advanced to the semi-finals courtesy of a sensational win over Alexander Zverev, setting up a clash with history-making Russian qualifier Aslan Karatsev.