Peng, the former doubles world number one, is absent from Melbourne and there are fears for her wellbeing after she alleged online in November that she had been "forced" into sex by a Chinese former vice-premier during a years-long on-and-off relationship.
Ons Jabeur missed two opportunities to become the first Arab player to capture a Grand Slam singles title this year, but the Tunisian said on Saturday that 2023 can be special for her as she chases her dream.
The victory sent the 21-year-old from Poland into a Saturday final with Jabeur, who thrashed France's Caroline Garcia 6-1, 6-3 in Thursday's other semi-final.
After announcing earlier this month that the countdown to her retirement had begun, Williams will step on court at Arthur Ashe Stadium at Flushing Meadows for what could be her final appearance in a Grand Slam singles event.
"We love you Serena," fans screamed as the 23-time Grand Slam title winner appeared for what could have been the final singles match of her career.
Williams's farewell on-court interview was threaded with emotion. "I love playing here, I've always loved playing here," she said, choking up as fans who cheered her throughout the match called out their appreciation.
Jabeur was leading 6-3, 2-1 when Belinda Bencic signalled she couldn't continue in the final after hurting her left ankle in a fall in the first set. "I told her, ‘Forget about it, forget about today.’
“I’m really happy with this,” said Raducanu in her acceptance speech. “I’ve watched Sports Personality of the Year growing up and it’s an honour to be among those past winners.
New York: Serena Williams will face Canadian teenager Bianca Andreescu for the US Open title as the American set herself up for another attempt to clinch a record-equaling 24th Grand Slam