Bjorn Borg Signed Tennis Ball comes professionally framed with a certificate of authenticity on the back. Björn Rune Borg is a Swedish former world No. 1 tennis player. Between 1974 and 1981, he became the first man in the Open Era to win 11 Grand Slam singles titles (six at the French Open and five consecutively at Wimbledon), but he never won the US Open despite four finals appearances. He is the first male player to win five Wimbledon titles in the Open Era, as well as the only Swedish tennis player, male or female, to win more than 10 grand slams.