The 1970s tennis great is Bjorn BORG, a Swedish professional tennis player who won 11 Grand Slam singles titles during his career. He was known for his exceptional skill and his trademark wooden racket. He was also known for his rivalry with American player John McEnroe, which was dubbed the 'Fire and Ice' rivalry due to their contrasting styles of play. BORG retired from professional tennis in 1983 at the age of 26.