Hendershot was unavailable for the Cowboys' practice Wednesday due to a shoulder injury, Todd Archer of ESPN.com reports.
Hendershot was forced to sit out the team's "mock game" at practice as the Cowboys gear up for their first preseason contest Sunday on the road versus the Rams. The tight end will look to get back on the practice field as soon as possible, though he may not be able to go Sunday depending on the severity of his shoulder issue.