He was born August 8, 1981, in Switzerland.
He spent his childhood with his parents and old sister in Munchenstein.
His family likes sports so he began various sports. For example, soccer, athletics, and tennis.
He won prize in several sports event.
But when he was 12 years old, he decided to quit other sports and focus all his efforts on tennis.
Those two years later, he became the national junior champion in Switzerland.
Reference
"rogerfederer.com ::rogerfederer.com"
http://www.rogerfederer.com/en.html
"Roger Federer - Tennis Players - Tennis - ATP World Tour"
http://www.atpworldtour.com/Tennis/Players/Top-Players/Roger-Federer.aspx
"Roger Federer - Wikipedia, the free encyclopedia"
http://en.wikipedia.org/wiki/Roger_Federer