Navarro’s win meant the last two American women remaining in the field were Wahoos.
Danielle Collins, who captured two NCAA singles titles at Virginia (2014 and 2016), secured three wins in London before falling on Monday to Barbora Krejcikova in the round of 16, ending her deepest run at Wimbledon.
The 30-year-old Collins, who’s won two Women’s Tennis Association Tour tournaments since March, is retiring at the end of this year. Her story has attracted new fans, including actor Matthew McConaughey.
Navarro, Collins’ soon-to-be teammate on the U.S. Olympic Team, is considered a rising star in the sport. Seeded 19th at Wimbledon, the 23-year-old is in the quarterfinal round of a Grand Slam event for the first time in her career.
The ESPN broadcast of Collins’ Monday match included commentary on Collins and Navarro’s relationship.
“Collins and Navarro are quite close,” Mary Joe Fernandez told the viewing audience. “They text each other; they try to go watch each other play. Collins, being older, is more of a mentor to Navarro.”
Navarro’s quarterfinal match against No. 7 seed Jasmine Paolini is set for 10:30 a.m. on Tuesday.