Veteran lightweight Matt Wiman has been forced to withdraw from his March 21 bout with Leonardo Santos due to a back injury. Stepping in for the TUF 5 alum will be Minnesota's Tony Martin, who is coming off the biggest win of his career, a UFC 179 submission of Fabricio Camoes last October.
This UFC Fight Night main card bout will air live on FOX Sports 1 from the Ginasio do Maracanazinho in Rio de Janeiro, Brazil.
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