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An upcoming light heavyweight match between Chael Sonnen and Wanderlei Silva has been moved from the co-main event of UFC 173 to the main event of a UFC Fight Night event in May. The yet to be announced UFC event will happen in Brazil, both fighters are currently coaches on the UFC Ultimate Fighter Brazil III. The yet to be named UFC Fight Night event takes place on May 31st from a location TBA in Brazil with the aforementioned fighters headlining.
