Shanghai Masters: Jannik Sinner and Carlos Alcaraz survive tough tests

Carlos Alcaraz and Jannik Sinner came through tough tests at the Shanghai Masters to reach the last 16. World number one Sinner recovered from a set down to beat Tomas Martin Etcheverry 6-7 (3-7) 6-4 6-2, while Alcaraz earned a 7-6 (7-5) 6-3 victory against Yibing Wu.