Winker (back) is out of the lineup for Tuesday's Game 1 of a doubleheader against the White Sox, Mark Zuckerman of MASNSports.com reports.
Winker left Sunday's loss to the Red Sox in the sixth inning due to back spasms, Andrew Golden of The Washington Post reports.
Winker went 2-for-5 with a grand slam in Saturday's 11-4 victory over the Marlins.