Mirra Andreeva secured one of the biggest wins of her young tennis career Monday at Wimbledon – but for a few moments after match point, she had no idea.

Mirra Andreeva was the last person on Centre Court to realize she beat Emma Navarro, a result that made her the youngest woman in 18 years to reach the Wimbledon quarterfinals.

Djokovic’s bid for an eighth Wimbledon title and 25th Grand Slam singles trophy overall will continue against No. 22 Flavio Cobolli of Italy. Cobolli reached his first major quarterfinal with a 6-4, 6-4, 6-7 (4), 7-6 (3) victory over 2014 U.S. Open champion and two-time major runner-up Marin Cilic.