Locke (foot) has been ruled out for the remainder of Sunday's game against the Commanders, Calvin Watkins of The Dallas Morning News reports.
Locke exited the first quarter of Sunday's contest due to a foot injury. The Cowboys will need to finish the divisional contest with the Commanders without Locke or Malik Hooker (forearm), leaving slot cornerback Caleb Downs or reserve strong safety Markquese Bell to play free safety.