Write a review on the new HEAD YouTek Graphene Speed or Instinct for a chance to win a practice session with HEAD star players Maria Sharapova and Novak Djokovic.

For more information visit head.com/g or facebook.com/headtennis

ATP world’s No.1 is heading into 2013 season with new HEAD SPEED racquet.

Novak’s brand-new weapon is the top model of the redesigned YouTek SPEED tour racquet series from HEAD, which introduces a revolutionary technology to modern racquet construction: HEAD Graphene.

Graphene is a unique material consisting of a single two-dimensional layer of carbon atoms with exceptional properties. It’s extremely lightweight, but has a breaking strength 200 times greater than steel. The integration of Graphene™ in the racquet shaft allowed HEAD engineers to reduce weight in the middle part of the tennis racquet and shift it to functionally more relevant areas in the grip and the head instead.

This unique construction with Graphene technology allows for the first time an optimized redistribution of weight in HEAD racquets: more weight in the grip makes the racquet more manoeuvrable and easier to swing; more weight in the racquet head enables even more powerful shots – and will give Djokovic’s opponents a really hard time.

Check out Novak commercial with special guest Maria Sharapova:

For more information please visit head.com/g