Andre Kirk Agassi (born April 29, 1970) is a former World No. 1 professional American tennis player who won eight Grand Slam singles tournaments and an Olympic gold medal in singles. He is one of only five male players to have won all four Grand Slam singles titles. He also is one of only three men (Jimmy Connors and Mats Wilander being the others) to have won Grand Slam singles titles on three different surfaces. In addition to his Grand Slam and Olympic singles titles, he won the Tennis Masters Cup and was part o.