Nadal has won 13 of their 15 encounters on clay courts and 9 of their 15 encounters on hard court , .
Federer has won 2 out of their 3 meetings on grass courts .
Nadal has won 13 of their 15 encounters on clay courts and 9 of their 15 encounters on hard court , whereas Federer has won 2 out of their 3 meetings on grass courts .