Fletcher made his first career start as a pitcher for Triple-A Gwinnett on Wednesday, striking out six over five innings while allowing two earned runs on three hits and and one walk in a 5-2 win over Norfolk.
Fletcher was sent outright to Triple-A Gwinnett on Thursday.
Atlanta selected Fletcher's contract from Triple-A Gwinnett on Tuesday.
Atlanta reassigned Fletcher to minor-league camp Monday.
Fletcher got the start at shortstop in Thursday's Grapefruit League game against the Rays and went 0-for-1 with a walk and a stolen base.
Fletcher was outrighted to Triple-A Gwinnett by Atlanta on Wednesday, David O'Brien of The Athletic reports.
Atlanta acquired Fletcher and Max Stassi from the Angels on Friday in exchange for Evan White and Tyler Thomas, Jeff Passan of ESPN.com reports.
Fletcher is out of the lineup for Monday's game against the Rangers, Jeff Fletcher of The Orange County Register reports.
Fletcher went 2-for-4 with a solo home run Friday in a loss to Detroit.
The Angels selected Fletcher's contract from Triple-A Salt Lake on Thursday.