If you know about Björn Borg’s successful career in the 1970s, how much do you know about his 90s comeback after retiring in 1981? CULT TENNIS examined it in the video above and why it was such a failure. Tl;dr: the dedication and effort values diminished and the Swede kept his wooden racket for most of his comeback, despite everyone else having progressed to graphite in the 1980s. But hey, at least the hair stayed!