Emma Raducanu's astonishing US Open triumph could lead to a pot of gold worth around £20 million (S$37.2m) over the next two years, according to sports marketing experts.

The 18-year-old's earning potential is set to soar, after becoming Britain's first female Grand Slam champion for 44 years. She is also the first-ever qualifier to win a Major, which has made her the new golden girl of women's tennis.