US Open champion Emma Raducanu has withdrawn from this week’s Mubadala World Tennis Championship in Abu Dhabi after testing positive for Covid-19. Organisers of the event confirmed the news on Monday evening, with the search now on for a replacement to take on Olympic champion Belinda Bencic on Thursday - <a href="https://www.thenationalnews.com/uae/advertorial/2021/12/05/eight-reasons-not-to-miss-the-mubadala-world-tennis-championship/" target="_blank">the tournament's opening day</a>. Raducanu, <a href="https://www.thenationalnews.com/sport/tennis/2021/10/11/us-open-champion-emma-raducanu-to-star-in-abu-dhabis-mubadala-world-tennis-championship/" target="_blank">who was set to debut in Abu Dhabi</a>, said in the statement: “After testing positive for Covid-19, I will have to postpone until the next opportunity to play in front of the fans here, which I was very much looking forward to. I’m isolating as per rules and hopefully will be able to get back on court soon.” In the same statement, organisers added: “Emma is now isolating and following all necessary protocols. We wish her a quick recovery and hope to see her back on the court soon. We are looking at alternative top female competitors to go head-to-head with Belinda Bencic; further updates will be provided in due course.” Raducanu, 19, was scheduled to face fellow debutant Bencic in a match to close out Day 1 of the three-day event, which concludes on Saturday. The Brit rose to prominence earlier this year, first by reaching the second week at Wimbledon as a wild card. In September, Raducanu <a href="https://www.thenationalnews.com/sport/tennis/2021/09/11/british-teenager-emma-raducanu-makes-history-to-win-us-open-title/" target="_blank">won the US Open </a>to become the first qualifier to capture a Grand Slam in the open era, defeating Bencic in the quarter-finals. Bencic, meanwhile, <a href="https://www.thenationalnews.com/sport/tennis/2021/10/13/belinda-bencic-to-face-emma-raducanu-at-the-mubadala-world-tennis-championship/" target="_blank">took home the women’s singles gold medal at the Tokyo Olympics</a> in the summer. The Mubadala World Tennis Championship, now in its 13th edition, was to feature eight of the world’s most prominent players – six male and two female. <a href="https://www.thenationalnews.com/sport/tennis/2021/11/30/rafael-nadal-very-happy-to-make-return-at-mubadala-world-tennis-championship/" target="_blank">Rafael Nadal and Andy Murray</a> are two of the stars competing this week at the International Tennis Centre at Zayed Sports City.