The 24-time Grand Slam champion faces two much-younger rivals who are ahead of him - and the need to keep them both close

Jannik Sinner stands 4800 ATP points clear of Carlos Alcaraz at the top of the ATP ranking list. The Italian is spending his 20th week as world no. 1, matching Mats Wilander and having Alcaraz within his sight.

The future faces of tennis squared off on Saturday in Saudi Arabia. Jannik Sinner defeated Carlos Alcaraz in three sets in the finals of the Six Kings Slam: 6-7 (5), 6-3, 6-3.

Jannik Sinner defeated Carlos Alcaraz 6-7 (5), 6-3, 6-3 for the championship in the Six Kings Slam exhibition Saturday, after Novak Djokovic topped Rafael Nadal 6-2, 7-6 (5) in the third-place match at Riyadh,

Jannik Sinner defeated Carlos Alcaraz in the Six Kings Slam final to win the eye-watering sum. The Italian came out on top in an epic three-setter in Saudi Arabia

Jannik Sinner and Carlos Alcaraz discussed their rivalry and relationship after their showdown in the final of the Six Kings Slam in Saudi Arabia. Sinner defeated Alcaraz 6-7(5), 6-3, 6-3 to win the exhibition tournament in Riyadh and earn a staggering $6 million — the highest prize money cheque in tennis history.