World ranking: 9
US Open best:
3rd round (2000)
2002: 2nd round
2001: 1st round
2000: 3rd round
The fleet-footed Frenchman has been in impressive form in the second half of this year after being hampered by injury during the clay-court season.
He reached the semi-finals at Queen's Club before going on to beat home favourite Tim Henman en-route to the semi-finals at Wimbledon.
Grosjean's record at the US Open is modest, which is surprising considering his impressive record on hard courts.
Indeed he won through to the semi-finals at the Australian Open in 2001 and the last eight a year later.
Yet the 25-year-old, who is based at Boca Raton in Florida, has never been past the third round at Flushing Meadows.
Grosjean is one of the most naturally talented players on tour - a natural volleyer with outstanding reflexes and fabulous court coverage.
At just 5ft 9ins tall, he has a surprisingly powerful serve, as he showed at Wimbledon earlier in the year.
Yet he still needs to be at his very best to fight off the more powerful players on the tour.