Sean Lee getting left knee checked out

AP

Perhaps Sean Lee can have a non-contact visit with the doctor this afternoon.

After his star linebacker was helped off the field Tuesday afternoon, Cowboys coach Jason Garrett said Lee’s injury was to his left knee, and they’d know more later today, according to Charean Williams of the Fort Worth Star-Telegram.

That likely means he’s headed for an MRI, after being blocked to the ground by rookie guard Zack Martin in what is supposed to be something less than practice.

Even though it’s May, losing Lee for any amount of time will be a huge blow for the Cowboys.