“He should never be considered a finished tennis player”: Roger Federer’s ex-coach warns Jannik Sinner to be vary of ‘difficult opponent’ Novak Djokovic

Ivan Ljubicic, the ex-coach of former world number one Roger Federer, has warned Italy’s Jannik Sinner not to consider legendary tennis star Novak Djokovic a ‘finished player’. The 22-year-old, along with Spain's Carlos Alcaraz, is often regarded as one of the most highly-rated players currently playing men’s tennis.

Ljubicic was recently quoted in a report where he praised Sinner and believed that he would soon become world number one. However, he warned the Italian to never consider the 24-time Grand Slam winner a ‘finished tennis player’ because of his ability of winning big matches. "We understood how Jannik works,” he said. “He is not focused on a single goal but works on constant improvement. Sinner will become number one because he is the strongest but he will not overturn his plans to do so.

“The level is always high, winning tournaments is not it's never simple. There is Novak Djokovic and he should never be considered a finished tennis player. When he's on the ball, and I'm sure he will be from now on, he really remains a very difficult opponent to beat.” Sinner recently took part in the Madrid Open where he was forced to withdraw just before the start of the quarterfinal because of a hip injury.