France’s Gilles Simon has recorded a shock third-round victory over fourth seed David Ferrer at the US Open.

Ferrer, whose relentlessness has earned him the soubriquets 'Little Beast', 'Roadrunner' and 'The Wall', struggled in hot and humid conditions in New York and went down 6-3 3-6 6-1 6-3.

Having made 10 straight grand slam quarter-finals, the 32-year-old has now failed to get past the third round at the last two.

It was an overdue big win at a slam for the talented Simon, whose only previous appearance in the fourth round at Flushing Meadows came in 2011, when he lost to John Isner.

Ferrer said: "It was a tough match today. There is a lot of humidity, very sunny, and it was not easy for me. I was not good with my fitness. He was better."