Lacoste sponsored Andy Roddick reveals on his website every month who his most-deserving fan is.

And this month it is 17-year-old Luca Kupo from Hungary, who says she has been a fan of Roddick for around five or six years now.

She explains she always watches his matches on TV, where viewers will see Roddick flying around the court in his Lacoste polo shirt and cap.

Ms Kupo also has T-shirts bearing slogans professing her love for the star, although his male fans may keep it more low key with a simple Lacoste polo shirt!

But while she has a soft spot for the star, the fan of the month has been competing in tennis matches since she was nine, so she is well aware of the rules and tactics involved in the game.

Drawing inspiration from the tennis-playing style of Jean Rene Lacoste, the brand will feature a giant crocodile logo on a range of new clothing.