LONDON—Mirra Andreeva was the last person on Centre Court to realize she had won her fourth-round match against Emma Navarro on Monday, a result that made her the youngest woman since 2007 to reach the Wimbledon quarterfinals.
Andreeva was so focused on not thinking about the score that she didn’t grasp that the match was over when Navarro netted a forehand in a 6–2, 6–3 win for the 18-year-old Russian.