Legacy secured, Anderson Silva moved by passion, challenges

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RIO DE JANEIROTo say that Anderson Silva is one of the best of all time in MMA is almost redundant. A few years after losing the title, the former middleweight champion is still the most dominant champion in the history of the organization, and holds the record for most post-fight bonuses. With such an impressive resume, it's almost hard to remember that, officially, The Spider has not won a fight since 2012, when he knocked out Stephan Bonnar at UFC 153. But if you think that this both