Roger Federer was shocked at the Cincinatti Open after a shock defeat to Russian qualifier Andrey Rublev.
Federer was beaten in straight sets 6-3 6-4 and admitted that his opponent “didn’t give him anything” on the court.
The tournament is a warm up for the US Open which starts at the end of August.
The third-round defeat was a huge blow to 20-time major champion Federer’s preparations.
Rublev will now battle with his Russian compatriot Daniil Medvedev for a place in the Cinci semi-finals.
World No 3 Federer told ATP: “He was super clean – defence, offence, serving well. Didn’t give me anything. He was everywhere.
“So it was tough for me, but an excellent match by him. I was impressed.”
Federer had breezed into the round of 16 after a straight sets win in the round of 32 against Argentine star Londero, after a bye into that round of the competition.
His rival Nadal did not take part in the Cincinnati Open, whilst other nemesis Novak Djokovic takes on Frenchman Lucas Pouille in the quarter final tomorrow morning.
Djokovic is the clear favourite to lift the Cinci crown.
Federer’s surprise defeat to Rublev was his QUICKEST defeat in over 16 years of tennis.
21-year-old Rublev, who broke the third seed in his first two service games, cried tears of joy after pulling off the biggest win of his career.
“It is such an amazing feeling when you’re playing a legend like Roger and all these people supporting him until the end,” he told ESPN.
“Today I was just trying to do my best and was thinking in my head that I need to play every point until the end no matter what.”
For more tennis news, click here.