Novak Djokovic, Murray, Federer, Serena and others arrive to observe a moment of silence for Brad Drewett, forever head of the ATP who died suddenly from motor neurone disease. Brad Drewett, a former tour player who led the ATP as executive chairman and president since January 2012, died Friday after a battle with motor neurone disease. He was 54. Drewett was a top-40 singles and top-20 doubles player before he retired in 1990. He was hired in 2006 to lead operations in the Middle East, Asia and the Pacific regions, and later played a key role in securing significant prize money increases for all four grand slam events. Drewett also developed and managed a number of successful businesses in the sport and fitness industry, and had worked as a commentator for two Australian television broadcasters.