Paula Badosa beats Coco Gauff to reach the semi-finals of the Australian Open; Badosa almost retired from tennis entirely last year due to a persistent injury; watch all the action from the ATP and WTA Tours on Sky Sports Tennis,

Alexander Zverev played his best tennis when it mattered most to down Tommy Paul 7-6(1) 7-6(0) 2-6 6-1 on Tuesday and reach his third Australian Open semi-final in five years, keeping alive his dream of finally landing a Grand Slam title.

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 continues his bid for an elusive first Grand Slam title with victory over Tommy Paul to reach the Australian Open semi-finals.

Alexander Zverev warned Sunday he can "do a lot of damage" at the Australian Open but is wary of "smart" quarter-final opponent Tommy Paul. He can mix up his groundstrokes a lot," Zverev said of Paul.