Lions WR Tyrell Williams in concussion protocol

Detroit Lions wide receiver Tyrell Williams is in the concussion protocol, putting into question his availability for Week 2.He was injured in the third quarter of Sunday’s Week 1 loss to San Francisco when 49ers safety Jaquiski Tartt hit the sixth-year wideout helmet-to-helmet. Tartt was whistled for unnecessary roughness on the play.Williams, 29, signed a one-year deal with the Lions in the offseason to bolster a WR corps beset with the losses of Kenny Golladay, Marvin Jones and Danny Amendola to free agency.Williams had two catches for 14 yards before exiting.He has 199 catches for 3,195 yards and 23 touchdowns in 70 career games (50 starts) for the Chargers (2015-18), Raiders (2019) and Lions.