SYDNEY, July 27, 2007 (AFP) - Former world number one Lleyton Hewitt on Wednesday said he would lead Australia in its Davis Cup tie with Serbia in Belgrade next September.

Hewitt said Australia would be underdogs in the World Group playoff, where he is likely to face Novak Djokovic, who beat him in the fourth round at Wimbledon this year.

'If we can win this tie it will be a remarkable win, it really would,' said Hewitt.

'It's a great challenge, but this is the kind of thing I look forward to.