Sinner stretched his run in Sofia with a new straight-set victory 29 SepTop seed Jannik Sinner continued his standout record in Sofia as he moved past Portugal’s Nuno Borges 6:3, 6:4 in the second round and secured a match in the quarter-finalst in third year in a row. The Italian lifted the trophy on his debut in Bulgaria in 2020, before he successfully retained his title last