Happy Birthday Roger Federer: 5 facts you probably didn't know about the tennis star

Swiss tennis star Roger Federer has turned 38 today. The star is a recipient of 20 Grand Slams and is known to have broken many records. With an image of being a soft-spoken, yet humorous person, Federer is loved by all and a father of two twins. Here are five lesser-known facts about Federer on his birthday.