US Open: Sinner obliterates Bublik to set up all-Italian quarter-final with Musetti

World No 1 takes just 81 minutes to complete winItalian has 25 straight wins at hard-court grand slamsJannik Sinner claimed his quickest grand slam victory with a brutal destruction of Alexander Bublik in the fourth round of the US Open.The world No 1 had looked a little vulnerable in the previous round, when he dropped his first set of the tournament to Denis Shapovalov, but he needed just an hour and 21 minutes to race to a 6-1, 6-1, 6-1 win against Bublik.