On March 25, 2026, Jang Sung-kyu dropped a fresh Instagram post that instantly drew attention. In the photos, he looks right at home on a tennis court, radiating a warm, friendly vibe. Wearing party hats and holding a cake with a friend, he celebrated on court and wrote, "This is the first time I've ever been congratulated like this. Thank you for playing tennis with me and helping me improve." The post captured the upbeat spirit of his tennis meetup, and fans quickly flooded the comments with congratulations and support.