Serena Williams’ latest comeback to professional tennis suffered an abrupt halt at Queen’s Club when her doubles partner, Victoria Mboko, was forced to withdraw with a knee injury, ending their run before a highly anticipated quarter-final

Williams had electrified the sport with her first competitive appearance in four years, teaming up with 19-year-old Canadian Mboko for a straight-sets win over Nicole Melichar-Martinez and Erin Routliffe in the opening round of the HSBC WTA Championships at the historic west London venue

The veteran and the rising star were scheduled to face Leylah Fernandez and Laura Siegemund in the last eight, a clash that promised a compelling mix of power, touch and generational contrast on grass

Those plans collapsed when Mboko, ranked inside the world’s top 10, failed to recover from a left knee injury sustained in her singles match against Karolina Pliskova

Mboko slipped on the grass and crumpled awkwardly into an involuntary splits position, immediately clutching her knee

Courtside microphones picked up her distressed assessment to physios that “there is no stability right now,” a comment that underlined the seriousness of the incident

She was unable to complete the match and, after overnight assessment, opted against risking further damage by returning to the court alongside Williams

Tournament officials later confirmed the Canadian’s withdrawal from the doubles draw, handing Fernandez and Siegemund a walkover and leaving Williams’ comeback temporarily on hold

The 23-time Grand Slam singles champion is now expected to resume her return in Berlin, where she is set to partner Karolina Muchova in doubles

Williams has yet to commit to any singles events and remains non-committal about Wimbledon, where she would require a wildcard to compete after years away from the rankings

Her presence at Queen’s nonetheless reignited global fascination

In her first match back, Williams delivered trademark booming serves and heavy groundstrokes, drawing roars from a packed crowd and the visible delight of her daughters Olympia and Adira, who watched from the stands

Despite the emphatic win, Williams graded her performance harshly, joking that it merited only “a C minus,” while acknowledging the challenge of returning on grass after such a long absence

For now, her comeback remains a work in progress, its momentum checked not by her own body, but by the cruel timing of a partner’s injury