Hyeon Chung has just broken through the big-time tennis circuit by beating Novak Djokovic in the Australian Open. Last year he won the Next Gen ATP Finals. What racquet does he use? Hyeon Chung endorses the Yonex VCORE Duel G 97 (310) and actually plays with it too. There has been some speculation on the forums whether he uses a custom racquet and looking closely at pictures it is a 16×19 …
