Lleyton Hewitt became the youngest ever year-end number one after beating Pat Rafter in their final round robin match at the Masters Cup.

Pat Rafter's Masters Cup challenge came to a sorry end as he was beaten by Sebastien Grosjean of France in the Sydney SuperDome.

Lleyton Hewitt today beat Andre Agassi 6-3 6-4 to close the gap on world number one Gustavo Kuerten in the Champions Race to just eight points.