Wimbledon champion Barbora Krejcikova was upset in the second round of the U.S. Open by Romanian qualifier Elena-Gabriela Ruse, losing 6-4, 7-5. Krejcikova, seeded No. 8, acknowledged her lack of recent match play following her victory at Wimbledon, which left her uncertain about her performance level. Ruse, ranked 122nd, showcased strong form by coming from behind in the second set, marking her first advance to the third round of a Grand Slam. She will next face No. 26 seed Paula Badosa, who defeated Taylor Townsend. Krejcikova's defeat makes her the highest-ranked player eliminated from the tournament thus far, and no woman has won both Wimbledon and the U.S. Open in the same year since Serena Williams in 2012.