Roy Stanley Emerson (born November 3 1936) is a former Australian tennis player who won 12 Grand Slam singles titles and 16 Grand Slam men's doubles titles. He is the only male player to have won singles and doubles titles at all four Grand Slam tournaments. His 28 Grand Slam titles are an all-time record for a male player. Most of his titles were won in the final years of the period where the Grand Slam events were open only to amateur players, just before the start of the open era when professionals were admitted into tennis' most prestigious events.