John David Newcombe, AO, OBE is a former tennis player from Australia who 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 and a former record 17 men's doubles titles. He also contributed to five Davis Cup titles for Australia during an age when Davis Cup was deemed as significant as the majors. Tennis magazine rated him the 10th best male player of the period 1965–2005.