Toni Nadal addressed the crowd's reaction, acknowledging their disappointment. The Spaniard called it understandable after they paid for tickets to witness a thrilling clash between two of the world's best players.

Novak Djokovic has posted a scan of his injured left hamstring on social media more than 24 hours after being booed at the Australian Open when he quit playing one set into his semifinal because of what he said was a torn muscle.

Rafael Nadal's former coach says there's been “mistrust” surrounding the injured Djokovic’s physical condition long before fans lashed out in Melbourne.

Novak Djokovic is 37 and was forced to stop playing because of an injury at two of the past four Grand Slam tournaments.

Novak Djokovic has retired from his Australian Open semifinal against Alexander Zverev after losing the first set in a tiebreak. Djokovic missed a regulation putaway volley on top of the net down 5-6,

What promised to be the next chapter in a phenomenal rivalry was overcome by strangeness on Rod Laver Arena in Melbourne

An injured Novak Djokovic retired from the Australian Open after dropping the first set of his semifinal against Alexander Zverev.

Top seed Novak Djokovic ends his campaign at Australian open following an injury in the semi-final match against Alexander Zverev in Melbour..|News Track

Australian Open organisers have not ruled out capping crowd numbers in a bid to preserve the grand slam’s unique off-court “experience”.

I saw Carlos was hesitant a little bit…so I started to take my chances,” said the 37-year-old after his four-set quarterfinal victory.

Djokovic has again weaponised a perceived slight against him and that should scare his Australian Open rivals. Whether you believe his reaction to the comments from Channel 9 anchor Tony Jones ...

Novak Djokovic surged into an Australian Open quarter-final clash ... The last time was in the semi-finals of the W TA China Open in Beijing, where Gauff won 4-6, 6-4, 6-2 on her way to lifting the title.