Swiss tennis great Roger Federer has praised his wife Mirka and said that she has played a vital role in both his personal and professional life.

Talking about his relationship with Mirka, he told Tennis World USA: "When I met my wife, I had no titles and now I have 103. She has a great role in my life. She is a great person. We travel a lot, all the parents know that children push you to the limit, changing them diapers...but tennis helps me to anticipate what they will be in their lives."