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.

The 24-time Grand Slam champion Novak Djokovic has opted out of Serbia’s Davis Cup team after sustaining a muscular injury in his left thigh during the Australian Open.

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.

Alexander Zverev dropped the ultimate praise on Jannik Sinner following their Australian Open final clash, comparing the Italian to prime Novak Djokovic. Bidding to win his first Grand Slam, the 27-year-old German fell short after the No. 1 seed handed him a 6-3 7-6 (4) 6-3 loss.

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

Follow reaction as Sinner retained the championship with a brilliant showing against three-time major final loser Zverev on Rod Laver in Melbourne