Emma Raducanu has spent her time hopping from one media interview to another since her fairytale U.S. Open triumph and how she deals with her new-found fame could be as important as her tennis skills for her long-term success.

The 18-year-old Brit stunned the world with her improbable run to the title last week, triggering comparisons with some of the greatest achievements in sport.

Her innocence, youthful exuberance and contagious smile have made Raducanu an instant hit with fans and the media and sports marketing experts believe she could become one of the world's most marketable athletes.