rtokens: Duran , whose 97-12 record spans three decades , hopes a win in the 10-round bout will earn him a rematch against Puerto Rico 's Hector " Macho " Camacho .
pos: IN PRP VBZ NNP , PRP MD VB PRP$ NN IN CD IN DT NN POS JJ NNS , " JJ NNP NNP NNP NNP NNP VBD .
tokens: If he loses Saturday , it could devalue his position as one of the world 's great boxers , " Panamanian Boxing Association President Ramon Manzanares said .
ltokens: " Each time he fights , he 's on the last frontier of his career .