Jannik Sinner celebrates scoring during the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

BEIJING, Sept. 29 (Xinhua) -- Top seed Jannik Sinner of Italy reached the China Open semifinals with a 6-1, 7-5 win over Hungary's Fabian Marozsan on Monday, while women's No. 1 seed Iga Swiatek advanced after her opponent retired.

The 24-year-old world No. 2, a four-time Grand Slam champion, dominated the opening set but was tested in the second. Despite creating four break chances, Sinner failed to convert as Marozsan held firm.

At 4-4, the Hungarian broke serve for a 5-4 lead after Sinner saved one point with an ace. But the Italian responded immediately with a love game to level.

Sinner then broke again in another love game to close out the match 7-5.

Next, Sinner will face third seed Alex de Minaur, who advanced after Jakub Mensik retired while trailing 4-1. The Australian is also aiming to qualify for the ATP Finals.

On the women's side, Swiatek maintained her perfect record in Beijing, winning the first set 6-0 against Colombia's Camila Osorio before the world No. 83 retired early in the second. The six-time Grand Slam champion first played the China Open in 2023, when she dropped only one set on her way to the title. ■

Jannik Sinner hits a return during the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

Fabian Marozsan celebrates scoring during the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

Jannik Sinner hits a return during the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

Fabian Marozsan hits a return during the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

Jannik Sinner signs for spectators after the men's singles quarterfinal match between Jannik Sinner of Italy and Fabian Marozsan of Hungary at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Na Yuqi)

Alex De Minaur hits a return during the men's singles quarterfinal match between Alex De Minaur of Australia and Jakub Mensik of the Czech Republic at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Nayuqi)

Jakub Mensik hits a return during the men's singles quarterfinal match between Alex De Minaur of Australia and Jakub Mensik of the Czech Republic at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Nayuqi)

Alex De Minaur (L) communicates with Jakub Mensik after the men's singles quarterfinal match between Alex De Minaur of Australia and Jakub Mensik of the Czech Republic at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Nayuqi)

Alex De Minaur gestures after the men's singles quarterfinal match between Alex De Minaur of Australia and Jakub Mensik of the Czech Republic at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Nayuqi)

Alex De Minaur signs after the men's singles quarterfinal match between Alex De Minaur of Australia and Jakub Mensik of the Czech Republic at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Nayuqi)

Iga Swiatek hits a return during the women's singles third round match between Iga Swiatek of Poland and Camila Osorio of Colombia at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Xin Mengchen)

Camila Osorio hits a return during the women's singles third round match between Iga Swiatek of Poland and Camila Osorio of Colombia at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Xin Mengchen)

Iga Swiatek signs for spectators after the women's singles third round match between Iga Swiatek of Poland and Camila Osorio of Colombia at 2025 China Open tennis tournament in Beijing, China, Sept. 29, 2025. (Xinhua/Xin Mengchen)