Björn Rune Borg is a former world No. 1 tennis player from Sweden. Between 1974 and 1981 he became the first man in the Open Era to win 11 Grand Slam singles titles, although he was never able to win the US Open in four finals appearances. He also won three year-end championships and 16 Grand Prix Super Series titles. Overall, he set numerous records that still stand. Borg was the first player to win six French Open singles titles. He is considered to have been the No. 1 player in the world for 1977, 1978, 1979 and 1980.