Emma Raducanu 's bid for the Wimbledon fourth round could not have stumbled upon a higher hurdle as the Brit takes on world No.1 Aryna Sabalenka on Centre Court. Raducanu has been in fine form since the start of this year's Championships, comfortably beating Mimi Xu and Marketa Vondrousova by identical 6-3 6-3 scorelines.