Fans blown away by Andy Murray's record-breaking serve as he strolls in to the US Open quarter-finals

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2016 US Open - Day 8

Tennis fans have awoken to the news that Andy Murray has reached the quarter-finals of the US Open, delivering a record-breaking serve as he demolished Grigor Dimitrov.

Murray produced a flawless performance in Arthur Ashe Stadium, and Dimitrov was simply unable to cope as the Scot strolled to a 6-1 6-2 6-2 victory.

The 29-year-old was broken only once in the whole match and produced the fastest serve of his career, at 141 miles per hour, to win the opening set.

"I played extremely well, tactically I played a good match," Murray said after the game.

"It's definitely up there, I played well today, made very few unforced errors and made it tough for Grigor."

On his record-breaking serve, Murray added: "I served one at 145 in San Jose once but the next day they recalibrated the gun because it was completely wrong.

"Tonight's was the fastest serve I've hit. The other one was here at the US Open, 138. I think it was lucky. I only did it once. I'm not expecting to do it again."

Andy Murray

The British number one has now reached the last eight in 22 out of his last 23 grand slams and he will face Japan's sixth seed Kei Nishikori for a place in the semi-finals.