Matteo Berrettini recovered from a set and a break down to beat Alejandro Davidovich Fokina in five sets and reach the US Open quarter-finals for a second successive year.
A shock looked to be on the cards when unseeded Davidovich Fokina broke the 13th seed midway through the second set, but Berrettini found his range and held off a spirited fightback to win 3-6 7-6(2) 6-3 4-6 6-2.
Ad Berrettini, who beat Andy Murray in the previous round in four sets, will next face either fifth seed Casper Ruud or Corentin Moutet.
US Open'Unbelievable for tennis' — McEnroe loving 'beautiful' Kyrgios improvement3 HOURS AGO “I am really proud because I didn’t start the match the way I wanted to, but I fought through," said Berrettini. «I found the right energy.