Because Perez had just been optioned to Gwinnett on Saturday, the only way he could have been activated before Sept. 8 was if he was taking the roster spot of a player who was placed on the disabled list.
The Braves had been toying with the idea to send Edwin Jackson to the mound to start Wednesday afternoon's game. But because Jackson's recent workload would have limited him to just three innings, the Braves opted instead to gamble on Perez, who had posted a 9.87 ERA in his past six starts.
Mark Bowman is a reporter for MLB.com. Listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.