Roger Federer and Rafael Nadal will play in an exhibition match on Sunday ahead of the Australian Open to raise funds for victims of flooding in the country's northeast.

Federer, Nadal, Novak Djokovic and Kim Clijsters will join Lleyton Hewitt in a "Rally for Relief" match at Rod Laver Arena. Also participating will be Sam Stosur and retired star Pat Rafter, who both come from the affected state of Queensland.

Stosur said the ongoing flooding, which has killed 25 people since November and flooded the city of Brisbane, is an "enormous disaster" and "lots of us just want to make some sort of contribution." Federer, Nadal and Clijsters took part in a similar fundraising match last year – that time following the earthquake in Haiti.