Steffi Graf is a former world number Number 1 and regarded by many as the greatest female tennis player of all time. Throughout her career she won 22 Grand Slam titles including Wimbledon a total of 7 times! In 1988, she became the first and only tennis player (male or female) to achieve the Calender Year Golden Slam by winning all four Grand Slam singles titles and the Olympic gold medal in the same year. Graf was ranked World No.1 by the Women’s Tennis Association for a record 377 total weeks. She retired in 1999, and is married to tennis legend Andre Agassi. Graf has donated a pair of size 10 Adidas trainers.