Manny Ramirez's trade request will be difficult to honor because of his contract, Boston Red Sox president Larry Lucchino said Thursday. Lucchino also said he didn't know the left fielder's motivation for refusing manager Terry Francona's request to play Wednesday afternoon's game at Tampa Bay after another outfielder, Trot Nixon, was sidelined with a strained muscle in his side. Before the injury, Francona told Ramirez he could have the day off. "It's hard to know if the events of the last couple of days are the result of sort of psychological and physical needs for a sustained period of rest...