Robert Guerrero has held world titles at featherweight and junior lightweight. In April, he claimed a pair of interim lightweight belts. Now, the Gilroy, Calif., fighter is ready to go up another weight class for a big challenge at junior welterweight. Golden Boy promoter Richard Schaefer told ESPN.com Thursday that he is "putting the finishing touches" on a fight between Guerrero (29-1-1, 18 KOs) and junior welterweight slugger Marcos Maidana(Below) (30-2, 27 KOs). Read more: http://sports.espn.go.com/sports/boxing/news/story?id=6646257