Coco Gauff has lost her opening match at the Luxembourg Open in straight sets, just three days after winning her first WTA title in Austria.
Eighth-seeded Anna Blinkova of Russia beat the American 15-year-old 6-4 6-0 in their first-round match on Wednesday.
Gauff won just eight points in the second set and Blinkova clinched the victory with a forehand winner to set up a second-round meeting with Tatjana Maria.
Gauff became the youngest player to win a WTA tournament since 2004 when she beat 2017 French Open champion Jelena Ostapenko in the final in Linz on Sunday.
“I know she’s a great player and I knew she was coming off a WTA tournament win, so I was well prepared,” Blinkova said.
Fifth-seeded Viktoria Kuzmova was also eliminated, losing to Laura Siegemund of Germany 6-2 6-3.
Third-seeded Elena Rybakina advanced easily by beating Denisa Allertova 6-2 6-1, while Margarita Gasparyan defeated Monica Niculescu 6-2 7-5.