<blockquote>Raducanu beat fellow teenager Leylah Fernandez 6-4 6-3 to end Britain's 44-year wait for a women's Grand Slam singles champion.<br><br>"I send my congratulations to you on your success," the Queen said.<br>"It is a remarkable achievement at such a young age, and is testament to your hard work and dedication."<br><br>In a statement, the monarch added: "I have no doubt your outstanding performance, and that of your opponent Leylah Fernandez, will inspire the next generation of tennis players."<br><br>UK Prime Minister Boris Johnson tweeted: "What a sensational match! Huge congratulations to Emma Raducanu.<br><br>"You showed extraordinary skill, poise and guts and we are all hugely proud of you."<br>It was a historic night for British sport's newest star which led pundits to predict big things and seemingly brought the UK to a standstill...<br><br>Virginia Wade, who was present at Arthur Ashe Stadium to witness Raducanu's win, was the last British woman to win a Grand Slam singles title - at Wimbledon in 1977.<br>In an unprecedented run Raducanu became the first qualifier to win a major and has done so without dropping a set.<br><br>"A star is born," tennis legend Martina Navratilova said. "Emma Raducanu makes history and she is just getting started."<br><br>Former British number one Greg Rusedski, speaking to Amazon Prime, added: "She is going to be a multi-Grand Slam winner, a world number one.<br><br>"She is the real deal and it is a breath of fresh air having an 18-year-old win the event."<br>Raducanu, whose run to the fourth round at Wimbledon earlier this summer is her only other Grand Slam appearance, will take home 1.8m in prize money and rise from 150th to 23rd in the world rankings.<br><br>Former Wimbledon champion Pat Cash described her success as "mindboggling".<br>"This [a qualifier winning a Grand Slam] is something I never could have believed would happen," the Australian said on BBC Radio 5 Live.<br><br>"I think I am going to wake up. It is so unbelievable. It is flabbergasting to see this performance."<br><br>Tim Henman, another ex-British number one who was courtside in his role working for Amazon, said: "She will win more of these [Grand Slams], she is that good.<br>"This is not some flash in the pan or fairytale. She is playing 'top-five tennis'.<br>"Her world will be turned upside down but she has good people around her and it will be a hell of a ride if she can stay injury free."<br><br>Raducanu won the title with a classy performance in a high-calibre match against Canada's Fernandez that lasted almost two hours.</blockquote><a rel=ugc href="https://www.bbc.com/sport/tennis/58533034">https://www.bbc.com/sport/tennis/58533034</a> Click here to read full news..