STEFFI GRAF & ANDRE AGASSI: the union of two tennis stars from different cultures. Born in 1969 in West Germany, Graf is the first & only tennis player (male or female) to win all four Grand Slam singles titles and the Olympic gold medal in the same calendar year. Agassi was born in 1970 in Las Vegas, Nevada, and is considered to be one of the greatest tennis players of all time. His father, a former Olympic boxer for Iran, is of Armenian descent. His mother is an American.