Head boasts that its U.S. racquet sports business, Head Racquet Sports USA, achieved its best-ever results last year. The company said that the Head and Penn brands both managed double-digit sales hikes, even though they already had a strong share in the U.S. market at the start of 2012. Head attributed this to the dedication of its staff, as well as digital marketing investments around the outstanding performances of its three most prominent endorsees: Novak Djokovic, Maria Sharapova and Andy Murray. The company was also lauded by retailers for the sharpness of its sales force and its deliveries. Head is to announce its full results for 2012 in March. The guidance set out last November is unchanged, since the company's management already envisaged the remarkable development of Head Racquet Sports USA at the time.