It seems as if there’s always something going on with Novak Djokovic at Grand Slam tournaments. Even he says so.

Boris Becker has given his verdict on the Australian Open semi-final between Novak Djokovic and Alexander Zverev and how his fellow German can cause an upset.

Alexander Zverev reached his third Australian Open semifinal with a 7-6 (1), 7-6 (0), 2-6, 6-1 win over Tommy Paul on Tuesday.

Even with some shaky serving in his first two games, the second-seeded Zverev survived 12th-seeded American Tommy Paul 7-6 (1), 7-6 (0), 2-6, 6-1 in the quarterfinals in Melbourne on Tuesday.

Alexander Zverev reached his third Australian Open semifinal with a 7-6 (1), 7-6 (0), 2-6, 6-1 win over 12th-seeded Tommy Paul of the United States on Tuesday. The No. 2-ranked Zverev had to save a set point in each of the first two sets but then dominated both tiebreakers.