Matteo Berrettini of Italy advanced to his first Grand Slam quarter-final by beating Russia's Andrey Rublev 6-1, 6-4, 7-6(6) at the US Open. Berrettini, seeded 24th, made use of his big forehand throughout the match, hitting 17 forehand winners on the Louis Armstrong Stadium court. вЂњMy weapons were really good today,вЂќ said Berrettini who hit a total of 37 winners. вЂњI was mixing up my tennis.вЂќ The 43rd-ranked Rublev, with wins against Swiss pair Roger Federer and Stan Wawrinka in Cincinnati last month, went into MondayвЂ™s match as the slight favorite. But the Russian struggled with his first serve through most of the match, managing to get only 56% of first serves in and losing 67% of those he landed. Berrettini faces the winner of Monday's later match between France's 13th seed Gael Monfils and Pablo Andujar of Spain.