In a surprising turn of events, pop music sensation Taylor Swift and Kansas City Chiefs' tight end Travis Kelce made a grand entrance at the U.S. Open men's singles final. The couple, accompanied by Kansas City quarterback Patrick Mahomes and his wife Brittany Mahomes, turned heads as they walked hand in hand towards Arthur Ashe Stadium on Sunday.

As tennis stars Taylor Fritz and Jannik Sinner prepared for their match, all eyes were on Swift and Kelce, who took their seats just outside a lower luxury box at the northwest corner of the stadium. Surrounded by intense global interest in their relationship, the celebrity quartet appeared to be enjoying a typical double date.

Swift, known for her energetic performances, sipped on a Honey Deuce cocktail and waved to fans after Sinner secured the first set. Throughout the game, the group cheered Fritz on, with Swift raising her arms in excitement, and Kelce and Patrick Mahomes pumping their fists.

While other celebrities were featured on the big screens, Swift and Kelce opted to enjoy moments together privately. During the final changeover, the couple danced and sang along to "I Believe in a Thing Called Love" by The Darkness, creating a memorable moment exclusive to their own enjoyment.

Following the match, Swift and Kelce commended both Fritz and Sinner. Swift applauded Sinner as he was presented with the championship trophy, showcasing her appreciation for the sport and its talented players. It remains unclear whether Swift or Kelce have direct connections to the tennis players beyond sharing a first name with Fritz.

The timing of this star-studded event was coincidentally suitable for Kelce and Mahomes, as it aligned with the opening Sunday of the NFL season. The Chiefs had a victorious season opener against the Ravens, with Swift in attendance. Regardless of their involvement with the players, it wouldn't be surprising if Swift and Kelce had planned to attend the U.S. Open as avid sports enthusiasts.

The U.S. Open has always attracted a plethora of celebrities, some attending out of their own interest and others as part of promotional appearances for corporate sponsors. This year was no different, with tennis fans experiencing appearances from renowned figures like Henrik Lundqvist, Bad Bunny, and Martha Stewart, among others.

Swift's relationship with Kelce has been a topic of public intrigue, with her consistent presence at his games and their heartwarming embraces after each victory. Similarly, her friendship with Brittany Mahomes has sparked endless speculation among tabloids and social media users.

Despite sporadic glimpses of the couple on the ABC television broadcast, their outing appeared to be a fun and casual Sunday spent with friends, albeit friends who happen to be multimillionaire celebrities.

As the tournament came to a close, the presence of Swift and Kelce added an extra touch of glamour and excitement to the U.S. Open, leaving fans and tennis enthusiasts eagerly anticipating the next star-studded event.