Advertisements featuring Serena Williams for GLP-1 medications provided by online pharmacy Ro will air on the Tennis Channel during her return to competitive tennis at the HSBC Championships in London this week, a network spokesperson confirmed to Front Office Sports.
The 23-time Grand Slam champion entered the WTA 500 grass tournament—which often serves as a warmup for Wimbledon—as a doubles wild card alongside 19-year-old Canadian Victoria Mboko. The pair’s first match is scheduled for June 9; a start time has yet to be announced.
Williams joined Ro as a “celebrity patient ambassador” in a multi-year deal announced last summer to “normalize the use of GLP-1 medications for weight loss.” Her husband, Alexis Ohanian, is a Ro investor and has been on the company’s board since 2018.
In an interview with NBC’s Today show at the time, Williams revealed she lost 31 pounds while on a GLP-1 medication provided by Ro. She said she began taking the medication consistently in 2024 after failing to see results from diet and exercise following the birth of her two daughters.
“I was on and off [the medication] and now completely on,” she told Today in August 2025. “It was a really good decision I had to make for my life, you know, I tried everything.”
