The tennis world has reacted in shock to Novak Djokovic’s sensational retirement just one set into his semifinal blockbuster with Alexander Zverev.

Novak Djokovic has pulled the pin at the Australian Open.

Novak Djokovic has pulled the pin at the Australian Open.

Daniela Hantuchova and Chris Stubbs look at what next for Novak Djokovic after his shock Australian Open retirement.

Daniela Hantuchova and Chris Stubbs look at what next for Novak Djokovic after his shock Australian Open retirement.

Daniela Hantuchova and Chris Stubbs look at what next for Novak Djokovic after his shock Australian Open retirement.

Analysis - From big personalities to those derogatory Djokovic comments, there was plenty to chew on at this year's Grand Slam in Melbourne, Dave...

MELBOURNE (Reuters) - Novak Djokovic rounded on his critics on Saturday the day after retiring injured in his Australian Open semi-final after the...

MELBOURNE (Reuters) - Novak Djokovic rounded on his critics on Saturday the day after retiring injured in his Australian Open semi-final after the...