Jets LB Josh Martin will miss Sunday's season opener against the Lions with a concussion, while S Marcus Maye and WR Jermaine Kearse are listed as doubtful.
Maye, who has been hampered by a foot injury, missed three consecutive days of practice, while Jermaine Kearse has been limited in practice due to an abdomen injury.
If all three players are unable to play, the Jets would lose three starters. In Martin's absence, the Jets activated Frankie Luvu from the practice squad and waived FB Lawrence Thomas.
LB Avery Williamson (hamstring) and LB Jeremiah Attaochu (calf) practiced on a limited basis on Friday due to a hamstring injury, but fully practiced on Saturday and are active for Sunday's game.