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And finally, the most famous tennis superstition of all: the facial hair of the great Bjorn Borg. This particular superstition only pertained to Wimbledon, so it was not seen as frequently as some of the others on this list. That made it no less entertaining, though.
Before each Wimbledon campaign, Borg would grow a beard in time for the start of the first round. His "lucky beard" seems to have helped; the seasons of 1976 to 1980 saw five straight titles for the Swede.
The success that his beard brought him was apparently very impressive to athletes of other sports. Since then, individual players and entire teams, including the 2009 Detroit Red Wings and Ben Roethlisberger of the 2006 Pittsburgh Steelers, have used the same strategy.