Bjorn Borg was a Swedish professional tennis player who won 11 Grand Slam singles titles during the 1970s and 1980s. He is widely considered to be one of the greatest players in the history of the sport and was known for his aggressive playing style and his trademark wooden racket. He was also known for his rivalry with American player John McEnroe, which culminated in the 1980 Wimbledon final. Borg retired from tennis at the age of 26 and has since become a successful businessman.