Chargers rookie offensive tackle Tyler McLellan was injured with 14:39 remaining in the third quarter of Saturday’s exhibition game against the Cowboys.

He went down on a 7-yard run by Elijah Dotson.

Coach Jim Harbaugh and all of McLellan’s offensive line teammates checked on him after he sat up.

McLellan needed help to reach a cart that took him to the X-ray room for what appeared to be a leg injury.

The Chargers view him as the third left tackle.

This spring he signed as an undrafted free agent.