Fletcher was sent outright to Triple-A Gwinnett on Thursday.
Fletcher appeared in five games for Atlanta after being selected from Triple-A on April 16, going 2-for-8 with two RBI. He will remain in the organization for now but has the ability to elect free agency. No corresponding move was announced alongside Fletcher's demotion, which may point toward a potential return from the IL for Ozzie Albies (toe) before Friday's game against Cleveland.