Impact: He appears to be re-energized after struggling with fatigue throughout the 2009 while trying to get back from the DL in a battle with Valley Fever. As it stands now, the D-Backs need to shuffle some players off of their 40-man roster if they're going to tender Jackson a contract for 2010 and keep him in their plans. If he's a healthy again, Jackson could be a nice low-cost value for a team in need of a productive bat in their outfield next season.