An injured Novak Djokovic quit because of a torn muscle in his left leg after dropping the first set of his Australian Open semifinal against Alexander Zverev on Friday.

Tennis star Novak Djokovic was booed by some sections of the crowd after retiring injured from his Australian Open semifinal against German Alexander Zverev.

Novak Djokovic’s Australian Open journey came to a premature end as an injury forced him to withdraw from the semi-final. The tennis legend has hinted at the possibility of retirement, depending on how the season unfolds.

And just as Djokovic had a couple of hurdles by the names of Roger Federer and Rafael Nadal to deal with, Sinner is not alone among the newest generation of tennis stars. His top rival at this point is Carlos Alcaraz, who has four Slam victories at age 21 — and won all three matches he played against Sinner in 2024.

Legendary tennis player Rafael Nadal’s coach and uncle Toni Nadal has questioned the authenticity of Serbian tennis legend Novak Djokovic’s injuries following his shock exit from the Australian Open 2025.

Rafael Nadal's uncle and former coach, Toni Nadal, has questioned the legitimacy of Novak Djokovic's thigh injury that forced him to retire during his Australian Open semi-final against Alexander Zverev.

Novak Djokovic simply cannot shake the conspiracy allegations that surrounded him at the Australian Open. The 10-time Australian Open champion went to extreme lengths this week to share photographs of a hamstring strain on his Instagram account after his unexpected withdrawal from the tournament raised concerns.

Jannik Sinner’s triumph at the 2025 Australian Open saw him become the 11th player in the Open Era to defend the Australian Open men’s singles title. Here, we look at the 11 men who have won consecutive Australian Open titles since the first Open edition was held in 1969.