In a surprising turn of events at the U.S. Open mixed‑doubles competition, the high‑profile duo of Serena Williams and Carlos Alcaraz advanced to the quarter‑finals before being toppled by the fourth‑seeded team of Belinda Bencic and Flavio Cobolli. The pairing, which captured the imagination of fans worldwide, combined the experience of a 23‑time Grand Slam champion with the youthful vigor of a rising star who had just returned from injury.
Williams, now 44, made her comeback to professional tennis in June after a lengthy hiatus, marking her first tour victory since 2022 when she and Alcaraz defeated the British team of Lloyd Glasspool and Erin Routliffe in their opening match. Alcaraz, the 22‑year‑old reigning men’s singles champion, was also making his first appearance since a wrist injury forced him out of competition in April.
Interestingly, his birth came five years after Williams captured the mixed‑doubles title at Flushing Meadows in 1998, adding a symbolic layer to their partnership. The match began slowly for the American‑Spanish pair, but they quickly found their rhythm, pulling off a 5‑3, 4‑1 win over Routliffe and Glasspool. The crowd at Arthur Ashe Stadium responded enthusiastically, cheering each rally as the two legends demonstrated why they remain fan favorites.
After the victory, Williams reflected on the surreal nature of the experience, saying, "I never expected to be back on this court. I never thought this would happen." Her words underscored the emotional weight of returning to a sport that has defined much of her life. In the quarter‑finals, however, the momentum shifted. Bencic and Cobolli, who had praised their opponents before the match as "the queen of tennis and the king of now," delivered a decisive performance, winning 5‑4, 4‑1.
The loss highlighted the physical demands of back‑to‑back matches, especially for a player who had recently resumed a rigorous schedule. The defeat also sparked speculation about Williams' future in doubles play. While she has already ruled out a repeat singles appearance at Wimbledon, she may consider partnering with her older sister Venus in the women's doubles draw, offering a nostalgic yet competitive option for the Williams sisters.
The tournament also saw other major upsets. Top‑seeded Novak Djokovic and Aryna Sabalenka, both multiple Grand Slam champions, were eliminated in their opening mixed‑doubles match. They fell 1‑4, 4‑2, 10‑2 to Britain's Henry Patten and Czech star Katerina Siniakova.
Djokovic and Sabalenka had taken the first set, but Patten and Siniakova rallied, clinching the second set and then dominating the match tiebreak. Siniakova sealed the victory with an ace on match point, ending the hopes of the high‑profile pair. Patten commented on the volatility of the format, noting, "It wasn't looking very good for a while; in this format we play one bad game and all of a sudden the first set's gone. We knew the same could happen in the second, and we played an amazing tiebreak.
Kat acing Novak on match point was great." His remarks highlight how the shortened, fast‑paced mixed‑doubles structure can produce dramatic swings in momentum. The mixed‑doubles event this year returned to its traditional slot in the week preceding the singles main draw, following a format overhaul last season aimed at attracting top singles players. Organisers reduced the field size and gave the competition a standalone calendar position, hoping to increase visibility and commercial appeal. The changes proved successful; the debut year saw sell‑out crowds and a roster featuring many of the sport's biggest names, despite criticism from some doubles specialists who argued the new format marginalised established partnerships.
Italian pair Sara Errani and Andrea Vavassori, who had defended their title the previous year by defeating Iga Swiatek and Casper Ruud, suffered an early exit this time around. Meanwhile, Mirra Andreeva and Andrey Rublev shocked the defending champions with a 1‑4, 4‑1, 11‑9 win in the opening round and later secured a semi‑final berth by beating Diana Shnaider and Casper Ruud 4‑1, 4‑5, 10‑5.
Looking ahead, Bencic and Cobolli will face the husband‑and‑wife team of Gael Monfils and Elina Svitolina, who themselves advanced after edging Patten and Siniakova in the quarter‑finals. The other semi‑final will see Czech duo Karolina Muchova and Jakub Mensik take on Andreeva and Rublev.
Both semi‑finals are scheduled for Wednesday night and will revert to the traditional best‑of‑three sets format, offering a more conventional tennis experience for fans. For viewers, the tournament can be followed live on Sky Sports, with streaming options available through the NOW platform and the Sky Sports app.
The U.S. Open continues to deliver high‑drama moments across all disciplines, and the mixed‑doubles competition, despite its shorter format, remains a showcase for both established legends and emerging talent, underscoring the sport's evolving landscape.