This trade is a little difficult to figure out: The Tampa Bay Rays are sending hard-throwing lefty reliever Jake McGee to the Colorado Rockies for outfielder Corey Dickerson. There is also one minor leaguer on each side involved.
On the surface it makes some sense. The Rockies had the worst bullpen ERA in the majors last season at 4.70; even by Coors Field standards that's awful and unacceptable. But the Rockies are also unlikely contenders in 2016, so using valuable current resources for a relief pitcher seems strange, especially considering McGee has just two seasons of team control versus four for Dickerson.