John David Newcombe AO OBE (born 23 May 1944) is an Australian former professional tennis player. He is one of the few men to have attained a world No. 1 ranking in both singles and doubles. At the majors, he won seven singles titles, a former record 17 men's doubles titles, and two mixed doubles titles. He also contributed to five Davis Cup titles for Australia during an age when the Davis Cup was deemed as significant as the majors. Tennis magazine rated him the 10th best male player of the period 1965–2005. Source: Wikipedia (en)