Emma Raducanu has risked a backlash on social media by continuing to promote sponsored content – despite her recent struggles at the US Open. The 21-year-old is undeniably a great talent, having secured glory in the same competition just three years ago. Yet Raducanu’s stock has fallen ever since that triumph and, at the end of last month, she was sent crashing out of the US Open in the first round. Many fans and pundits have questioned whether Raducanu is placing too much focus on commitments outside of the sport as she struggles to climb up the rankings. After all, since her win at Flushing …