Winans was recalled from Triple-A Gwinnett and will start Game 1 of Sunday's doubleheader against the Nationals.
The right-hander was sent to Gwinnett on Sept. 11 after making a spot start for Atlanta, and he'll rejoin the big-league rotation Sunday with Charlie Morton (finger) landing on the injured list. Winans has a 4.50 ERA, 1.27 WHIP and 26:4 K:BB across 22 big-league innings this season.