Alexander Zverev believes Rafael Nadal is the man to beat at the Australian Open this year if he is to win his first Grand Slam tournament. The third seed has been in fantastic form so far in Melbourne, not dropping a set in his first two matches including beating home hero John Millman 6-4, 6-4, 6-0 to advance to round three. Ad/> But despite two World Tour wins and Olympic gold in Tokyo, Zverev is yet to break his Grand Slam duck and hopes to improve on his Australian Open semi-final appearance in 2020 when he was beaten by Dominic Thiem.