Novak Djokovic‘s mid-match retirement from the semifinal against Alexander Zverev at the Australian Open sparked controversy. He was booed by the crowd at Rod Laver Arena when he was leaving the court,

Novak Djokovic is out of the Australian Open in stunning fashion. The 24-time slam champion medically retired immediately after dropping the first set of his semifinal match against No. 2 Alexander Zverev in a tiebreak 7-6 (5).

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

Novak Djokovic remains one of the best tennis competitors today. At the age of 37, we have yet to see a decline in the Serbian star’s level of performance.

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.

Zverev will face defending Australian Open champion and No. 1 seed Jannik Sinner, who beat American Ben Shelton 7-6 (2), 6-2, 6-2, in Sunday's final. Zverev is pursuing his first major tournament title.

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