Agassi

He is one of only five male players to have won all four Grand Slam singles events during his career. He is the only player in the open era to have won every Grand Slam singles title, to have won the Tennis Masters Cup, to have been part of a winning Davis Cup team, and to have won an Olympic gold medal. He won 17 ATP Masters Series tournaments, more than any other player. TENNIS Magazine has named him the 7th greatest male player from 1965 through 2005.