Jannik Sinner withdraws from Beijing ATP tournament due to knee injury, boosting Alexander Zverev's chances to become world number one

Jannik Sinner, the world number one tennis player from Italy, has withdrawn from the ATP tournament in Beijing, China, due to ongoing knee problems. He has not played since winning Wimbledon in July. This withdrawal means he cannot defend his 500 ranking points from last year, reducing his lead over Alexander Zverev, who won the US Open and is now 1,810 points behind. Zverev will compete in Beijing as the top seed, aiming to become the new world number one.