Sinner secures year-end men’s No 1 spot while Sabalenka beats Gauff in Wuhan

• Sinner beats Mahac 6-4, 7-5 in Shanghai Masters semis
• Sabalenka sees off erratic Gauff to reach Wuhan final

Jannik Sinner secured the year-end world No1 men's tennis ranking by beating the Czech 30th seed Tomas Machac 6-4, 7-5 in the Shanghai Masters semi-finals, capping a year in which the Italian has won two grand slam titles.

Machac made a promising start by winning the opening two games before Sinner got on the board, with the top-seed turning the set around before closing it out in 44 minutes as his opponent begun to rack up errors. Ultimately Sinner proved too solid for his fellow 23-year-old, making only nine unforced errors to seal his 64th win of the year.