The Rangers have long been linked to interest and efforts to trade for Diamondbacks outfielder Justin Upton. The latest round of speculation has included a multi-team deal including Upton and various configurations of six teams including the Diamondbacks, Indians, Rays, Royals and Mariners.
Peter Gammons gave some weight to the four-team trade rumors via Twitter:
https://twitter.com/pgammo/status/277101934966616064 Upton hit .246/.298/.454 in 633 plate appearances with the Rays this season. He hit 28 home runs and the Rangers believe he can benefit from hitting in Rangers Ballpark, statistically proven to be a hitter's park.