Guillermo Rigondeaux A champion in and out of the ring CORK, Ireland – WBA Interim Super Bantamweight champion Guillermo ‘El Chacal’ Rigondeaux (8-0, 6 KOs), arguably the greatest amateur boxer of all time, retained his world title last Saturday night by beating previously undefeated hometown favorite and former European champion, Willie ‘Big Bang” Casey (11-1,…