David Pablo Nalbandian (born 1 January 1982, Unquillo) is a retired Argentine professional tennis player and former World No. 3. He was runner-up at the 2002 Wimbledon Championships and the winner of the Tennis Masters Cup in 2005. He has also won two Masters 1000 events. He is the only Argentine player in the history who ever reached the semi-finals or better at all four Grand Slam tournaments and reached the men's singles final in Wimbledon.