Saudi Arabia will host a new elite tennis exhibition in October featuring Novak Djokovic, Rafa Nadal and three other Grand Slam winners, the country’s General Entertainment Authority has announced. Carlos Alcaraz, Yannick Sinner, Daniil Medvedev and Holger Rune will also take part in the Six Kings Slam tournament, which will be part of the Saudi cultural and entertainment festival Riyadh Season, organisers said.