Meyers (concussion) isn't participating in practice Wednesday, Evan Lazar of the Patriots' official site reports.

New England was without two of its starting receivers for its first Week 15 practice, as DeVante Parker wasn't present for the session while he recovers from a concussion of his own. Meyers was held out of this past Monday's win over the Cardinals while in the NFL's five-step concussion protocol, while Parker exited the Week 14 contest after sustaining the head injury. Both receivers may not be able to clear the protocol ahead of Sunday's game in Las Vegas, in which case Nelson Agholor, Kendrick Bourne and Tyquan Thornton would serve as the Patriots' top three wideouts.