American tennis coach Nick Bollettieri passed away aged 91 on December 4. Bollettieri was suffering from several health problems for the last two years. Bollettieri founded the IMG Academy in 1978 and helped launch some of the greatest tennis players in history, including André Agassi, Boris Becker, Jim Courier, Monica Seles, and Maria Sharapova.
Bollettieri started his coaching career in 1956 at the Wayland Academy and was considered the greatest tennis coach ever. In the early 1970s, he became the director of tennis operations at the Dorado Beach Hotel in Puerto Rico, owned by the Rockefeller family.
In 1977, he