For you tennis fans out there, you know who Roger Federer is. We all know him as the greatest tennis player in history, but here are some facts that make us love him even more.

1. At the age of 17, he became a professional tennis player.

2. He represents Switzerland - home of the best chocolate in the world.

3. He speaks four languages fluently: Swiss German, German, English and French.

4. He is a dad of four, twin girls and twin boys.

5. He is the first male to hold 17 Grand Slam titles, beating Pete Sampras' 14 Grand Slams.

6. At the age of 23, he won his first Grand Slam at Wimbledon in 2003.

7. In 2003, he established the Roger Federer Foundation to help disadvantaged kids and promote their access to education and sports.

8. He can rock a pink shirt.

9. He's now 34 and still rocking the tennis world.

10. He has a slick one-handed backhand.

11. In 2005, to help the victims of Hurricane Katrina, he auctioned off his tennis racket from that year's US Open Championship.

12. He can laugh off getting hit by a ball.

13. In 2003, he was suppose to serve in the Swiss military but was deemed unfit due to a history of back problems.

14. In 2006, he was appointed a Goodwill Ambassador by UNICEF.

15. He is a pro at trick shots.

16. In 2005, he became an Ambassador of United Nation's Year of Sport and Physical Education.

17. He was number one for 302 weeks; including 237 weeks consecutively.

18. In 2010, he arranged with other top tennis players, for a special charity event called "Hit for Haiti" to aid victims of the earthquake in Haiti.