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 semisGauff serves 21 double faults as Sabalenka reaches finalJannik Sinner secured the year-end world No 1 men’s tennis ranking by beating Czech 30th seed Tomas Machac 6-4, 7-5 in the Shanghai Masters semi-finals, capping a year where 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 minut