American Coco Gauff is brimming with confidence ahead of the French Open, buoyed by strong results in Italy on clay in the past two weeks that have helped the 17-year-old climb 10 places to a career-best 25th in the rankings. Gauff has already made the fourth rounds of the Australian Open and Wimbledon in her nascent career, and this week she will be seeded at a Grand Slam for the first time in her career when the clay court major starts on Sunday