Serena Williams has taken the procedural step necessary for any player considering a competitive comeback after the 23-time grand slam singles champion rejoined the International Tennis Integrity Agency (ITIA) registered test pool for the first time since 2022.
Williams, 44, has not played an official match since competing in the third round of the US Open more than three years ago. Although she described her departure at the time as a “moving away” from the sport rather than a harsh retirement, she filed paperwork with the ITIA in September, exempting her from the sport’s strict residency requirements. However, to return to competition, players must make themselves available for out-of-competition testing for six months before being allowed to participate in an event.
Williams’ name appeared on the agency’s updated Oct. 6 testing pool list. An ITIA spokesperson confirmed to The Guardian on Tuesday that Williams had requested reinstatement, while emphasizing that a place on the list in itself is not evidence of a comeback.
“Serena Williams is back on the list of registered testing pools,” an ITIA spokesperson said, noting that athletes returning from retirement “must make themselves available for testing for six months before returning to competition,” in accordance with World Anti-Doping Agency (Wada) regulations.
Later on Tuesday, Williams publicly disputed that her inclusion in the pool was a sign of plans to return. “Omg everyone, I am NOT coming back,” she said wrote on X. “This forest fire is crazy.”
A representative for Williams did not immediately respond to questions from the Guardian about her intentions.
The ITIA’s registered pool does not include every active player; it is largely reserved for elite singles athletes, high-ranking doubles players and wheelchair athletes, and professionals returning after extended absences.
Rumors of a possible cameo appearance at the US Open have been quietly circulating this year, especially around the mixed doubles event, which has evolved into a two-day showcase packed with star wildcards. But because Williams remained classified as retired at the time, she was ineligible to participate.
People familiar with the process have told the Guardian that Williams was exploring a return sooner than this fall. In August, just before the US Open, an attempt was made to re-enter the test pool, most likely in the hope of playing doubles with her sister Venus. Those plans disappeared when it became clear that the six-month testing period could not be waived, a restriction that prevented Andy Roddick from pulling off a similar last-minute double play in 2014.
Venus Williams, 45, never formally retired and therefore avoided the same procedural hurdles. She returned this summer after a 16-month hiatus, notching a singles victory in Washington, pushing No. 11 seed Karolína Muchová to a deciding set in New York and reaching the quarterfinals of the US Open doubles with Leylah Fernandez. She is expected to resume her schedule in Auckland early next season.
Serena’s return to the ITIA docs doesn’t guarantee a comeback, but it does restore her eligibility timeline. If she stays in the group without interruptions, she can participate in tournaments as early as mid-2026. Whether she plans to play in singles again, reunite with Venus in doubles, or simply retain the ability to do so remains uncertain.
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