Travis Kelce, Taylor Swift and Patrick Mahomes attend US Open men's final

Taylor Swift was in attendance at the US Open men's final along with Travis Kelce on Sunday, four days after watching her boyfriend's Kansas City Chiefs open their NFL season with a victory.

An error occurred while retrieving the Tweet. It might have been deleted.

The singing superstar was wearing a red-and-white checkered dress when she arrived for the match between American Taylor Fritz and Jannik Sinner of Italy. Kelce was dressed in a white shirt and sweater, looking dressed more appropriately for Wimbledon.

Sinner beat Fritz in straight sets to claim his second Grand Slam title this year.

An error occurred while retrieving the Tweet. It might have been deleted.

The couple sat in a box at Arthur Ashe Stadium along with Patrick Mahomes, Kelce's teammate with the Super Bowl champion Chiefs, and his wife, Brittany.

An error occurred while retrieving the Tweet. It might have been deleted.

Reporting by The Associated Press.

[Want great stories delivered right to your inbox? Create or log in to your FOX Sports account, follow leagues, teams and players to receive a personalized newsletter daily.]