<a href="https://www.thenationalnews.com/tags/emma-raducanu/" target="_blank">Emma Raducanu</a> surged into the Korea Open semi-finals on Friday as she won three matches in a row at a tournament for the first time since her US Open triumph. The 19-year-old Briton blew away third seed Magda Linette 6-2, 6-2 in Seoul and faces fellow former major champion Jelena Ostapenko in the last four. Raducanu stunned the tennis world when she emerged from qualifying to <a href="https://www.thenationalnews.com/sport/tennis/2021/09/11/british-teenager-emma-raducanu-makes-history-to-win-us-open-title/" target="_blank">win the US Open last year</a>, but she has struggled to build on that and her Grand Slam defence ended in the first round last month. Raducanu, who reached a career-high 10th in the world in July but is now 77th, showed flashes of her Flushing Meadows brilliance of 2021 in demolishing Poland's Linette in 77 minutes. Sixth-seeded Raducanu got off to a fast start, quickly winning the first four games and taking the first set 6-2. She continued to dominate in the second set and her race to the finish line was only temporarily held up when her opponent required a lengthy medical timeout. The resurgent Raducanu is yet to drop a set in Seoul but she faces a tough test in the form of top seed Ostapenko, the 2017 French Open champion from Latvia. She thrashed 186th-ranked Victoria Jimenez Kasintseva 6-2, 6-1 in their quarter-final. The other semi-final is between Russia's Ekaterina Alexandrova and Germany's Tatjana Maria.