First look at Djokovic's NEW Head Graphene 360 Speed Tennis Racquet -- VLOG #596 - YouTube
HEAD verlängert die erfolgreiche Partnerschaft mit Novak Djokovic · tennisnet.com
DHL Tennis on Twitter: "Novak Djokovic new weapon - 2015 Head Speed Pro Maria Sharapova new weapon - 2015 Head Instinct MP @DHLtennis http://t.co/mZkkrejJzr" / Twitter