New opponent for Derek SILVEIRA, 14-0 Roberto Valenzuela, Jr., on stacked “Riot at The Rim” card
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QUINCY, Mass. (March 31, 2019) – Former New England welterweight champion Derek “The Surgeon” Silveira has a new opponent for his April 12th main event fight for the vacant N.E. welterweight title on a stacked “Riot at The Rim” card,