Novak Djokovic has reacted to the crowd at the Australian Open booing after he decided to retire from his semifinal against Alexander Zverev. The Serbian tennis player, 37, had taken to the court with his left leg heavily taped following Tuesday’s injury.

Facing Sinner reminded Alexander Zverev of trying to solve the challenge presented by the 24-time major champion Djokovic.

Novak Djokovic’s quest for a record 25th grand slam title has been cut short at the Australian Open after he stunningly retired from his semifinal match due to a left leg injury.

Novak Djokovic has withdrawn from Serbia's Davis Cup tie against Denmark because of a hamstring injury. The 24-time Grand Slam champion was booed off court by some Australian Open fans last week when he retired with the issue after losing the first set of his semi-final against Alexander Zverev.

A week after a hamstring injury ended his run at the Australian Open, Novak Djokovic, 37, withdrew from Serbia's Davis Cup first-round qualifier, the country's tennis federation said on Tuesday, a move captain Viktor Troicki said has "weakened" the team.

Serbian Davis Cup captain Viktor Troicki has demanded Channel Nine commentator Tony Jones be banned from covering tennis for life following controversial comments about Novak Djokovic at the Australian Open.

Novak Djokovic has been defended by Serbia's Davis Cup captain as he called for an Australian broadcaster to be fired.

Novak Djokovic was forced to retire hurt from the Australian Open semifinals - and the Serbian may not be back in action until the French Open.