Wilfredo Benitez beating Cervantes for the lineal 140 crown at 17! He was still a boy and not yet a developed man yet. The youngest in history to achieve this feat. In fact I can only name 2 other guys in boxing history that became lineal champs at their division in their teen years. One is Canzoneri and the other Pacquiao. I'm pretty sure there may be 1 or 2 more but I'm not sure.