20 Jan
In October 2014, the decision was either already made or being made that the Braves would sell off most players with value and enter a rebuild. They were coming off a 79-win season, and they had determined that the farm system was barren, they had bad contracts dragging down the payroll (BJ Upton, Chris Johnson), and if they were going to do it, they had better do it now since Jason Heyward and Justin Upton would undoubtedly leave in free agency the following winter.
At the time, they had a solid core of players.