World number four Novak Djokovic booked a place in the Australian Open semifinals on Wednesday under unfortunate circumstances, advancing after fifth seed Lorenzo Musetti retired with a right groin injury despite holding a commanding two-set lead.

The quarterfinal at Rod Laver Arena took a dramatic turn when Musetti, who had outplayed Djokovic for much of the contest, began struggling physically early in the third set. After attempting to continue, the Italian eventually conceded the match while trailing 3-1, ending his breakthrough run in Melbourne.

Musetti had looked poised to secure the biggest victory of his career after claiming the opening two sets with confident baseline play and sharp court coverage. Djokovic, unusually subdued, struggled to impose his rhythm as the Italian dictated play with controlled aggression.

Injury halts Musetti’s momentum

Momentum shifted abruptly when Musetti showed visible discomfort early in the third set, his movement clearly compromised. Despite receiving treatment, he was unable to push off effectively or chase down wide balls, allowing Djokovic to gain control of the scoreboard.

Djokovic himself had taken a medical timeout at the end of the second set, with his right foot heavily strapped due to a blister. Even so, the 38-year-old appeared resigned to defeat before Musetti’s injury altered the course of the match.

Speaking afterward, Djokovic expressed sympathy for his opponent, acknowledging the Italian’s dominance before the retirement. He admitted Musetti had been the superior player and deserved a different outcome.

Djokovic moves on amid mixed emotions

The semifinal berth continues a strange tournament path for Djokovic, who entered the quarterfinals after receiving a fourth-round walkover when Jakub Mensik withdrew with injury. While progress remains intact, the manner of advancement left the Serbian subdued rather than celebratory.

Djokovic will next face either two-time defending champion Jannik Sinner or eighth seed Ben Shelton as he chases another Australian Open final. With physical questions lingering on both sides of the draw, the semifinal stage promises another demanding test.

For Musetti, the retirement marked a painful end to what had been a standout performance and a potential career-defining moment. For Djokovic, it was a reminder that even on off days, survival remains a crucial skill at the highest level.