Novak Djokovic’s Ultimate HEAD Speed Challenge

Novak Djokovic showcased the benefits of his new HEAD Graphene™ Speed tennis racquet by hitting a HEAD ATP tennis ball that travelled faster than an Audi R8 LMS GT3 race car at Melbourne’s Sandown racetrack. Check out now what really happened. For more information on Novak’s new HEAD Graphene™ Speed, click here: