VIDEO: Norwich's Rebecca Gray is counting down the days until she gets to rub shoulders with tennis superstars Rafael Nadal and Andy Murray at the Barclays ATP World Tour Finals.

After winning a nationwide competition, Gray will be one of the 30 Barclays Ball Kids on court at the O2 Arena in London when the event kicks off on November 21.

The 16-year-old beat off competition from 1,600 children nationwide to win her spot as a tournament ball-girl and will now share the small screen with the world's top eight players as they collide in tennis' season finale.

And after honing her skills at a week-long training camp at The Hampshire Rackets & Health Club in Southampton during half-term, Gray admits she can't wait for her moment in the spotlight.

'With the number of people there were at the regional trials and the national ones I never thought I'd be selected and I was just amazed when I was picked,' said Gray.

'The person I am most looking forward to being on court with is Rafael Nadal because when you watch him play you can see how much passion he has.

'Seeing tennis at such an extraordinary level is going to be amazing experience and I just can't wait for it now.

'When I got the email through saying that I was going it was just amazing, I couldn't believe it and I am really looking forward to the event starting now.'

More than 20,000 spectators a day will see Gray in action at the eight-day season finale, which sees the cream of world tennis go head-to-head for total prize money of nearly three million pounds.

And former British No 1 and Barclays Ball Kids ambassador Mark Petchey believes the experience will be a once-in-a lifetime opportunity for Gray.

'To be a Barclays Ball Kid at an event like the ATP World Tour Final is a real privilege,' said Petchey – a former coach of current world No 4 and leading British star Murray.

'I remember when I was younger I was a ball kid at Davis Cup ties and it was a fantastic experience and a huge help on my career.

'It gave me the opportunity to watch good players at the back of the court, at the net and I could really feel the pace of the game, so it will certainly be an experience Rebecca will never forget.'

• For information on how to become a Barclays Ball Kid at the 2011 Barclays ATP World Tour Finals in London visit www.barclaysballkids.com