In an effort to improve roster flexibility, the Yankees have both Starlin Castro and Rob Refsnyder working out at third base this spring. It might work, it might not. The only way to find out is to try, and there is no better time to try than Spring Training. Well, except in the minors, where the player can play their new position every day and not worry about sharing playing time.
Over the last few years the Yankees have boosted their farm system and improved the stock of several individual prospects by changing their positions.