Seven of the unlikeliest sporting comebacks after Tiger Woods makes history
Woods is not the only one to stage an unlikely return to the top in sports - here are some more.
Petra Kvitova
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Man given eight-year jail term for knifing ex-Wimbledon champion Petra Kvitova
Radim Zondra attacked the world number two tennis player while she was at home in the Czech Republic, injuring her hand.
Kvitova reaches Australian Open final two years after stabbing
Petra Kvitova is in the Australian Open final just over two years after being stabbed at her home.