Follow live text and radio commentary featuring Aryna Sabalenka, Carlos Alcaraz and Novak Djokovic from the Australian Open quarter-finals.

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.

Alexander Zverev was “uncertain” of his prospects coming into the Australian Open but finds himself in the semi-finals for the third time after overcoming Tommy Paul in four sets on Tuesday.