William Tatem Tilden II (February 10, 1893 - June 5, 1953), often called "Big Bill", was an American tennis player who was the World No. 1 player for 7 years, the last time when he was 38 years old. Born in Philadelphia, Pennsylvania, to a wealthy family, he was a "Junior" at birth but changed his name to "II" when he was in his mid-20s. Wikipedia
If a player's value is measured by the dominance and influence he exercises over a sport, then William Tatem "Big Bill" Tilden II could be considered the greatest player in the history of tennis. www.tennisfame.com/famer.aspx?pgID=867&hof_id=140
The definitive Wikipedia entry for Bill Tilden. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Bill_Tilden