14 events were there in Men's welterweight boxingat the Games of the XXXI Olympiad . 28 from 28 nations,313 from 65 nations were the competitors in Men's welterweight boxingat the Games of the XXXI Olympiad . The sport has the official site www.hardrock100.com . 7–20 August was when it was held . 17 were the number of teams who competed in Men's welterweight boxingat the Games of the XXXI Olympiad . The venue for Men's welterweight boxingat the Games of the XXXI Olympiad was Olympic BMX Center (BMX),Riocentro – Pavilion 6,Field . Men's welterweight boxingat the Games of the XXXI Olympiad was founded on 5 September 1971
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