Diadem Sports is an American sports brand founded in 2015 and based in Florida. It began by specializing in tennis equipment, including rackets, strings, and accessories designed for competitive players. The company later expanded into the growing pickleball market, producing high-quality paddles, balls, bags, and other gear. Known for its innovation and performance-driven designs, Diadem caters to athletes of all skill levels. The brand emphasizes its identity as a proudly American company focused on racquet sports.