GLENDALE, Ariz. - The players can be the last to know.Left-hander Matt Thornton knows he's in the mix to be the White Sox' closer, but that's aboutit. "Nobody has said a thing,'' Thornton said. "All I know is,they'll do what's best for the team.''Manager Robin Ventura has said Thornton and Jesse Crain,whose careers have been successfully shaped as seventh- andeighth-inning relievers, might step into the high-stakesninth-inning role. Rookie Addison Reed, who pitched a perfectinning in the Sox' Cactus League opener Mondayagainst the Dodgers that included striking out Matt Kemp andgetting Andre Ethier to pop up, has done nothing in camp butimpress.