Bang, bang, bang - German tennis star Alexander Zverev hit 24 aces in his quarterfinal victory against American Learner Tien at the Australian Open.
"Without my aces, I probably wouldn't have won today," said Zverev.
The world No. 3 won the quarterfinal 3–1 in sets and will face the winner of the match between Carlos Alcaraz and Alex de Minaur in the semifinals.
Zverev, who was in the final in Melbourne last year, is chasing his first Grand Slam title.
