A position switch is possible, though, especially if the Rays feel like they need to groom a first baseman or a right fielder.They could very well do that, and the reason is obvious: Evan Longoria mans the hot corner for the Rays, and he is going to be the case for some time.Regardless, Shaffer could arrive in the majors by mid-2014, and he could be an everyday player by 2015.He may not be an eve