An ebullient Roy Jones Jr. (52-4, 38 KOs), energized by his win over Felix "Tito" Trinidad at Madison Square Garden on Saturday night, says he is ready to take on all comers. "I told you Roy Jones Jr. is back," Jones said. "I'll take the winner of either the rematch between Kelly Pavlik and Jermain Taylor or Joe Calzaghe vs. Bernard Hopkins. I'm even willing to go down to 156 pounds to face Oscar De La Hoya in May. Line them up and I'll knock them down. I always said that with the right motivation and focus I can still be Superman. I saw it in the gym leading up to the fight and Tito Trinidad and everybody else saw it on Saturday night at the Garden. Like I said, line 'em up and I'll knock them down."