Robert Joseph Guerrero (born March 27, 1983 in Gilroy, California) is an American professional boxer. Nicknamed The Ghost, he is the former interim WBC welterweight champion. He is also a former IBF Super Featherweight world champion, a former interim WBA and WBO lightweight champion and a former two-time IBF featherweight champion. He vacated the IBF Super Featherweight belt due to his wife's battle with leukemia. Guerrero's coach is Ruben Guerrero. He is managed by both Bob Santos, Luis Decubas Jr, and Al Haymon.