Let's not overthink this. Obviously the Reds hope they can keep Bruce long-term (and they already smartly locked him up through 2018 at a very-reasonable price). But looking at the future, there is Hamilton to play CF, Phil Ervin to play CF (if Hamilton doesn't work out) or Ervin could be a corner outfielder if Hamilton does pan out, and then Winker as a corner outfielder as well. It makes sense to give Winker reps at LF and RF just in the event that he's needed at RF in the future. Chances are good Winker will be a LF, but I see no harm in him starting some games at Bakersfield in RF just to see if he can do it.