Venus Williams is on a Cinderella run at the 2025 US Open, but her famous sister hasn't been there to see it in person. Williams and her doubles partner, Leylah Fernandez, advanced to the quarterfinals in front of a raucous crowd inside Louis Armstrong Stadium on Monday, September 1. The unranked team of Williams, 45, and Fernandez, 22, will play the top seeds, Taylor Townsend and Kateřina Siniaková, on Tuesday, September 2. After the win on Monday, Venus addressed the absence of her sister Serena Williams throughout the tournament.