08:11 AM ET 12.05 | Yet to happen this week, there may still time for Nashville to see a blockbuster. A variety of three-, four- and even five-team trades are in play at the winter meetings, mostly involving the same clubs and same principal players, according to major-league sources. The clubs: Arizona, Cleveland, Texas and Tampa Bay. The principal players: Diamondbacks right fielder Justin Upton, Indians shortstop Asdrubal Cabrera, Rays right-hander James Shields and, most likely, Texas prospects. One proposed deal, according to sources, would send Upton to Texas and Cabrera to Arizona, with Cleveland likely receiving a package of young talent, possibly including Texas infielder Mike Olt (Tampa Bay would not be part of that particular trade).