Serena Williams' much-anticipated Wimbledon doubles reunion with her sister, Venus Williams, has come to an emotional end before it could begin after the American tennis icon withdrew because of a knee injury.

The sisters, who have won six Wimbledon doubles titles together, were scheduled to return to Grand Slam doubles competition for the first time since 2022 in a first-round clash against Colombia's Camila Osorio and Argentina's Solana Sierra. Their comeback had generated excitement among fans eager to see one of tennis' greatest partnerships back on the court.

However, the plans were cut short after Serena, 44, was ruled unfit to compete following a knee problem that developed after her singles defeat to Australia's 20-year-old Maya Joint earlier in the week.

Although Serena showed little sign of discomfort during the three-set contest and did not require medical treatment on court, the injury reportedly worsened soon after the match as her knee swelled significantly. Wimbledon officials had delayed final confirmation of her participation by scheduling the doubles match later in the day, giving the former world No. 1 as much time as possible to assess her fitness.

Announcing her withdrawal in an emotional Instagram post, Serena expressed her disappointment at missing the opportunity to compete alongside her older sister once again.

"I'm heartbroken to have to withdraw from doubles.

"Coming back to compete again has been a gift, and the opportunity to play alongside Venus once more meant the world to me.

"I did everything I could to be ready, but unfortunately my knee just isn't ready to compete."

Serena also shared photographs showing heavy bandaging on her left knee, along with images of syringes she said had been used to drain fluid from the swollen joint, highlighting the seriousness of the injury.

She went on to thank Wimbledon organisers for supporting her efforts to remain in the tournament.

"I'm especially grateful to tournament director Jamie Baker and the entire tournament team for giving me every opportunity to play here.

"Thank you to the fans after your incredible support and for making this comeback so meaningful.

"All I can say is stay tuned to a city near you."

The withdrawal was met with widespread disappointment around the All England Club, where fans had hoped to witness another chapter in the legendary Williams sisters' partnership. Together, Serena and Venus have claimed 12 Wimbledon singles titles and six doubles championships, establishing themselves as one of the most successful sibling duos in tennis history.

Despite the setback, Serena's return to Grand Slam tennis after a four-year absence has been viewed positively by many within her camp. Her appearance in the singles draw was considered a bold decision, particularly after playing only two doubles tournaments in the build-up at Queen's Club and Berlin.

Against Maya Joint, Serena displayed flashes of the powerful tennis that made her a 23-time Grand Slam singles champion. Her trademark booming serve, aggressive winners and relentless fighting spirit were evident throughout the match. However, signs of rust were equally noticeable, especially in her movement and footwork, with the knee issue potentially contributing to those struggles as the match progressed.

Serena has not revealed when she expects to return to competitive action. Attention now shifts to the North American hard-court season, which concludes with the US Open from August 30 to September 13. The six-time US Open singles champion, who turns 45 in September, will now focus on recovery before deciding whether to continue her comeback.

The latest setback also raises fresh questions about whether her body can withstand the physical demands of elite competition over an extended period. While her competitive drive remains as strong as ever, maintaining fitness and enduring the rigours of regular matches will likely determine how far her comeback can go in the months ahead.