LAS VEGAS (Nevada) (AFP) Aging warriors Bernard Hopkins and Roy Jones will try to settle old scores Saturday when they meet in a rematch 17 years in the making. But the bout between a pair of legendary fighters has been too long coming according to some, who fear the 40-something contestants have left things too late. The two fought on May 22, 1993, in Washingtons RFK Stadium for the vacant International Boxing Federation middleweight championship. Jones, who says he fought then with an injured right hand, won a unanimous decision that gave little indication of the careers each fighter would go on to build. Jones, 41, says he can hand 45-year-old Hopkins his first knockout defeat. Hopkins says Jones is desperate to turnaround his fortunes after a spate of unimpressive performances. I remember I beat him with one hand, said Jones, who has said the fight could cap his career. My right hand was injured and I had to overcome that. I didnt have a right hand in that fight against him. So why should it be so hard now that I got two hands? Hopkins, who has talked about the fight being a springboard to a clash with heavyweight world champion David Haye of Britain, acknowledged Jones could be a dangerous opponent. The desperation - if indeed it exists - would stem from Joness late-career losses - including a one-punch knockout by Antonio Tarver in May 2004 followed by a ninth-round knockout by Glen Johnson four months later. Joe Calzaghe beat Jones bloody in notching a lopsided unanimous decision in November 2008. And in December, Jones was stopped in the first round by Danny Green in Australia. Those results have prompted some pundits to say the fight should not even be going ahead. Margaret Goodman, a former ring doctor for the Nevada State Athletic Commission, says Jones should not be fighting. He shouldnt be competing now, and maybe never again. He has amazing credentials, an amazing history, and has been so good for the sport on so many levels, Goodman said. But his more recent performances have been terrible for someone with those credentials and that history. I dont know how you can turn a blind eye to that. Jones said his loss to Green is one of the only reasons Hopkins dared fight him. He feels like Im done. Im washed up. Im old goods. Thats the only reason hes taking the fight now, Jones said. Im going to give him my secret punch, guaranteed to stop him. Hes going to sleep by knockout. Theres nothing he can do to win. Hopkins, meanwhile, says hell settle a 17-year-old score. Hes one up on me. Its a personal vendetta, Hopkins said. Ive got something legitimate to me personally in this fight.