Not counting Nadal-Federer, it has happened three times.
1924 Borota-Lacoste
1925 Lacaste- Borotra
1928 Cochet- Lacoste
swizterland shortly called as Swiss
Roger Federer has made $45, 468, 857 in his career.
Roger Federer is ranked number two in the world behind Rafael Nada who took the number one spot from him last year.
He played in the 2008 Olympics and got to the quarter finals before losing to American James Blake. He is planning to represent Switzerland in the 2012 and 2016 Olympics.
Yes he is coming to play tennis and he said he loves abu dhabi soo much and he is playing on 1/1/2011 vs Roger fedrer I hope this will answer ur question