The Dallas Cowboys will shut down left tackle Tyron Smith for an "extended stretch" due to a sore back, according to Brandon George of the Dallas Morning News.
Per K.D. Drummond of USA Today, Smith missed some practice time last week as well with back stiffness.
Smith has a recent history of back issues, as he dealt with back and knee injuries last season. In all, he played 13 games in 2016 after missing just one game from 2011 through 2015.