Björn Rune Borg is a Swedish former world No. 1 tennis player widely considered to be one of the greatest players in the history of the sport. Between 1974 and 1981 he became the first man in the Open Era to win 11 Grand Slam singles titles. He also won three year-end championships and 16 Grand Prix Super Series titles. Overall, he set numerous records that still stand. Borg is the first player to win six French Open singles titles and was undefeated in French Open finals.