Iga Swiatek launched her title bid and home player Zheng Qinwen returned from injury at the China Open on Saturday.
In the women's draw, qualifier Aliaksandra Sasnovich of Belarus stunned 14th-ranked Naomi Osaka of Japan, the four-time major champion.
The 31-year-old world no. 130 fought back to win 1-6, 6-4, 6-2.
It was more routine elsewhere as world No 2 Swiatek breezed past China's Yuan Yue, cruising into round three with a 6-0, 6-3 victory.
Iga Swiatek has now won 34 sets 6-0 in WTA-1000 tournaments, more than any other player since the formats introduction in 2009 🤯
— TNT Sports (@tntsports) September 27, 2025
She powers into the final 32 in China 💪 pic.twitter.com/TqMMV3trNf
The top seed from Poland next faces Colombia's Camila Osorio, ranked 83rd.
Swiatek broke early to set the tone for a one-sided match against Yuan, winning the first set without dropping a game when the Chinese wildcard fired long.
Cheered on by her home crowd, the world no. 110 made a better fist of it in the second set but Swiatek wrapped things up when Yuan returned into the net.
Iga Swiatek becomes the player with the most 6-0 sets won in the history of WTA 1000 events.
— The Tennis Letter (@TheTennisLetter) September 27, 2025
34… that’s a whole lot of bagels. 🥯
🇵🇱❤️ pic.twitter.com/O4KWp46LnR
The crowd had more to cheer when fan favourite Zheng marked her return to competition by beating Colombia's Emiliana Arango 6-3, 6-2.
The world No 9 last played at Wimbledon in July, when she was beaten in round one by Czech player Katerina Siniakova.
"I'm really happy to play in front of my home crowd especially, coming from injury, two months without competition," the 22-year-old said.
Swiatek d. Yuan 6-0 6-3 in Beijing
— The Tennis Letter (@TheTennisLetter) September 27, 2025
Fresh off winning her 25th title in Seoul, Iga’s Asian swing is off to a great start.
She’s won 23 of her last 25 matches.
Been playing sensational tennis since Wimbledon… & the results show it.
✅58th win of 2025
7 wins, 0 losses in… pic.twitter.com/8K47IvXmqR
"I wasn't in my best shape," she said. "I still have maybe 10 percent left, or 20 percent left of my speed."
Zheng next plays the Czech Republic's Linda Noskova, ranked 27th.
Six-time major champion Swiatek is the top seed in Beijing after world No 1 Aryna Sabalenka withdrew injured.
Swiatek won the prestigious WTA 1000 tournament in 2023 but missed the competition last year citing personal matters.
It later transpired she had accepted a one-month doping ban after testing positive for a prohibited substance.
"I have great memories," Swiatek said of her record in the Chinese capital.
"But every tournament is a different story so you gotta start from the beginning and grind."
World No 5 Mirra Andreeva of Russia swept aside Zhu Lin of China 6-2, 6-2 and American Jessica Pegula dispatched Australian Ajla Tomljanovic 6-0, 6-3.