Federer downs Nadal

Federer dropped the opening set to the world number one but rallied back in the second, breaking early to take it 6-3.

The Swiss continued his good form in the third and final set to claim victory in the first of their two friendly matches.

The second will be played in Madrid on Wednesday to raise money for Nadal's charity.

The match in Zurich, played out in front of a capacity crowd which included Formula One world champion Sebastian Vettel and skiing champions Lindsey Vonn and Didier Cuche, raised money to support projects for African children in education and sport.

"Both of us realise we are in a very privileged position, where we have everything in life, the least we can do is to help people who are in difficulty," said Nadal.

"You have to look at the long term.

"When you can help 1,500 children to go to school, it's great but you need a lot around it: how do the children get to school, what do they eat at school, do they have toilets... and that's where we come in."