Wimbledon champion Barbora Krejcikova suffered another early exit from the US Open, losing her second-round match in straight sets to Romanian qualifier Elena-Gabriela Ruse.
Krejcikova became a two-time Grand Slam champion in July by adding the Wimbledon title to her triumph at the 2021 French Open.
The 28-year-old reached the quarter-final on her main-draw debut at the US Open in 2021, but has since failed to get past round two in New York.
Eighth seed Krejcikova saved a set point on her own serve at 5-2 down and broke world number 122 Ruse at the next opportunity, only to then tamely drop her next service game to lose the first set 6-4.