The following rosters for the Oakland A's full-season minor league affiliates are extremely preliminary. These rosters will likely change considerably as players are sent down from major league camp. However, the rosters can often be a good predictor of where players will end up on Opening Day.
Generally speaking, players don't move up a level during spring training. They either stay on their current roster or they move down when the players in big league camp are sent down. When a player is sent down from big league camp, it creates a ripple effect through the system. For example, when either Josh Donaldson or Landon Powell wins the back-up catcher role, the other player will be placed on the Sacramento spring roster, which will push one of the current catchers on that roster to a lower level (often, but not always, the next level down). Then that player will push a catcher on that lower level team's roster to a lower level, and so on.
Very rarely is a player promoted to a higher level because until April 1 when the major league season opens there are always players who are set to be sent down to minor league camp. The exception would be if a number of openings were made because of injuries. There are also players who are on a roster that they are likely to continue to be on throughout spring training and into the regular season. For instance, Grant Green and Stephen Parker are both currently on the Double-A roster and that is where they are expected to start the season. The same goes for Michael Choice, who is on the High-A roster. Max Stassi, however, is currently on the Double-A roster, but he is expected to suit up for High-A Stockton on Opening Day.
Below are the rosters as they stood on Monday, March 21.
Fautino De Los Santos
Zhi Fang Pan
Wade Kirkland Wilfredo Solano