Ex-tennis player Andre Agassi said it'll be "emotionally" tough for Novak Djokovic to compete as his rivals Roger Federer and Rafael Nadal have retired. "But I would never bet against Djokovic. Bet against him at your own peril," he stated. Federer retired in 2022 while Nadal retired earlier this year. Djokovic has won 24 singles Grand Slam titles so far.