2021 US Open champion Emma Raducanu went from a school kid to a tennis superstar in just 12 months. In Madrid, Raducanu took a moment to reflect on how her life changed in a span of 12 months. A year ago, Raducanu was just a regular 18-year-old girl that was taking her exams and thinking about maybe what college she should attend. 12 months later, Raducanu is a tennis star, who has been tipped to win multiple Grand Slams and reach the world No. 1 ranking one day. …