Former world No. 1 Andy Roddick has expressed concern that serious injuries may be a recurring problem for 24-time Grand Slam champion Novak Djokovic.

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Novak Djokovic has withdrawn from Serbia's Davis Cup tie against Denmark because of a hamstring injury. The 24-time Grand Slam champion was booed off court by some Australian Open fans last week when he retired with the issue after losing the first set of his semi-final against Alexander Zverev.

Novak Djokovic was forced to retire hurt from the Australian Open semifinals - and the Serbian may not be back in action until the French Open.

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.

"There has been a growing suspicion around Novak, due to his expressions or histrionics, casting doubt on the authenticity of his injuries."

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.