Belgium’s Elise Mertens produced one of the standout performances of the China Open 2026, defeating six-time Grand Slam champion Iga Swiatek 7-6 (0), 6-3 to storm into the women’s singles semifinals in Beijing on Friday. The world No. 19 delivered a composed and aggressive display to overcome the eighth-seeded Pole in one hour and 50 minutes, securing her first WTA 1000 singles semifinal appearance since 2021.
Mertens’ victory was particularly impressive given the quality of opposition she had faced throughout the tournament. The Belgian had already eliminated former Grand Slam champions Jelena Ostapenko and Coco Gauff before adding Swiatek to her list of high-profile victims. Her remarkable run of victories against three consecutive Grand Slam champions underlined her ability to raise her level against the sport’s biggest names.
“Sometimes you just grow into a tournament,” said Mertens after the match. For the 30-year-old, the result marked her third WTA 1000 singles semifinal appearance and her first victory over Swiatek in three meetings on the WTA Tour. It also demonstrated the value of consistency and tactical discipline in a tournament where several leading contenders had already been eliminated. The opening set was closely contested, with both players holding serve through a tense exchange of games.
Swiatek attempted to dictate rallies from the baseline, but Mertens matched her intensity and continued to find depth with her groundstrokes.
Neither player managed to break serve, sending the set into a tiebreak that would prove decisive. Mertens raised her level at precisely the right moment, winning all seven points to take the tiebreak 7-0 and put Swiatek under immediate pressure. The Belgian’s performance was built on exceptional serving efficiency and clean ball-striking. She won 87 per cent of her first-serve points, struck 24 winners against just 11 unforced errors and did not face a single break point throughout the match.
Those numbers reflected more than a strong serving day. Mertens consistently prevented Swiatek from gaining control of rallies, forcing the Polish star to work for openings while limiting the opportunities to attack her own serve. Swiatek, who has established herself as one of the dominant players of her generation through her six Grand Slam singles titles, was unable to find a solution to Mertens’ precision and consistency. The opening-set tiebreak left the Belgian firmly in control of the contest.
Mertens carried her confidence into the second set, continuing to apply pressure through precise returns and measured aggression. Swiatek attempted to extend rallies and disrupt the Belgian’s rhythm, but Mertens remained disciplined and avoided giving her opponent opportunities to recover.
The 30-year-old eventually secured the decisive break and consolidated her advantage, moving closer to a notable victory over one of the tournament favourites. Unlike many matches involving Swiatek, where the Pole’s relentless baseline game often determines the outcome, Mertens controlled the key exchanges with her own accuracy and consistency.
With the finish line in sight, Mertens maintained her composure to close out the second set 6-3, completing a statement victory and booking her place in the last four. The result also highlighted the Belgian’s versatility. While she is widely recognised for her doubles achievements, including multiple Grand Slam doubles titles, her Beijing campaign demonstrated her capacity to compete with the leading players in singles. Her run through a demanding draw has reinforced her standing as a dangerous opponent on the WTA Tour.
Mertens was scheduled to face China’s home favourite Zheng Qinwen in the semifinals after the Olympic champion defeated Ukraine’s Elina Svitolina 6-3, 7-6 (8) earlier on Friday. The matchup promised a contrast in styles, with Mertens relying on consistency and court positioning against Zheng’s powerful baseline game. The China Open, a WTA 1000 tournament played on outdoor hard courts at Beijing’s National Tennis Center, is one of the significant events of the Asian swing. With several top seeds falling before the semifinals, the tournament offered an opportunity for players outside the highest seed positions to make a deep run.
For Mertens, defeating Swiatek was a major milestone, but the challenge of facing Zheng in front of a passionate home crowd presented another demanding test. Elise Mertens’ victory over Iga Swiatek illustrates how tactical discipline, reliable serving and composure in high-pressure moments can disrupt even the most accomplished opponents. Her perfect tiebreak and the fact that she did not face a break point reflected a performance in which she gave Swiatek very few opportunities to take control.
The Belgian’s three consecutive victories over Grand Slam champions also make her China Open campaign particularly noteworthy. Rather than relying on isolated moments of brilliance, Mertens built her success around repeatable strengths: accurate groundstrokes, intelligent shot selection and effective serving. Her semifinal appearance marked an important milestone in her singles career. More broadly, her performance was a reminder that established champions can be challenged when opponents execute a clear tactical plan with consistency.
