Arguably one of the worlds biggest sporting fall from grace examples would be Tiger woods.
myself I was never a tiger fan as I thought the bloke was a pig for spitting on greens.
its hard not to judge this bloke as he constantly ****s up in life.

http://www.abc.net.au/news/2017-05-30/tiger-woods-dui-charge-blames-prescription-medication/8571180.The money this bloke still makes is amazing but
i can't think of a bigger fall in grace in SPORTING life.
can you
