Lockett sustained a leg injury during Sunday's game against the Jets.
Lockett went to the locker room near the end of the first half and wasn't on the sideline after the break before the Seahawks revealed the reason for his absence. He was back in action Sunday following a one-game absence due to surgery to repair a broken left index finger, but that issue didn't force him to exit Week 17. If Lockett is unable to return, he'll finish with two catches (on two targets) for 15 yards.