Historical Greats: Steffi Graf - The Calendar Year Golden Slam Winner

Steffi Graf is considered by many to be the greatest female tennis player of all time.
 
Graf was ranked No. 1 by the WTA for a record 377 total weeks, the most ever for any player man or woman. She won 22 Grand Slam singles titles. 

And in 1988, Graf achieved a feat unprecedented for any player in history, male or female - the fabled "Calendar Year Golden Slam" - winning all 4 Grand Slam titles and the Olympic Gold medal in the same calendar year.