Gaël Monfils, a French tennis player, celebrated his 40th birthday by advancing to the second round of the US Open. He defeated Paraguay's Adolfo Daniel Vallejo in the first round on Court Louis-Armstrong, where the crowd gave him a warm reception. Monfils thanked the spectators, saying their support created an electric atmosphere during the match. Monfils acknowledged the unique challenge of playing at his age, noting that he had to adjust his game strategy after a slow start and a first set that he lost quickly. He admitted to feeling tension in the first set and had to focus on improving his movement on the court. This adjustment was crucial for him to turn the match around and secure his victory. As a veteran player, Monfils has shifted his approach to training, emphasizing balance in his daily routine. He now plays fewer matches than during the peak of his career, which has required him to manage his physical and mental conditioning more carefully. This change in lifestyle has helped him maintain his performance on the court despite his age. In the second round, Monfils will face American player Learner Tien, who is currently ranked 15th in the world. The match promises to be a significant test for Monfils as he continues his journey through the US Open tournament.