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