Lifespan: 1987-1995
Reminds us of: A Koosh ball

In his 2010 book "Open," the tennis great revealed that he didn't cut his legendary mane because it was slightly thinning on top, he was actually supplementing it with a wig the whole time. He goes on to say that the stress of it possibly falling off affected his game, even causing some major losses. We'd feel sorry for him if it weren't such an ostentatious choice of hair piece...