Defensive end Marcus Davenport and linebacker Derrick Barnes were both placed on IR Tuesday after suffering significant injuries in Detroit’s Week 3 triumph over the Arizona Cardinals. Davenport’s injury was reported as torn triceps, while Barnes suffered a knee injury.

The Lions signed WR Tim Patrick from the practice squad to the 53-man roster and still have one open roster spot.

Two key members of the Lions defense are heading to injured reserve. Here's more details on the ailments, and the timetable for each player.

Detroit Lions head coach Dan Campbell provided an injury update on Marcus Davenport, Brian Branch, Alim McNeill, Sam LaPorta and Derrick Barnes.

Lions head coach Dan Campbell on Monday confirmed LaPorta was day-to-day after reports surfaced that it's a low-ankle sprain for the tight end.

Barnes was a fourth-round pick by the Lions in 2021 who appeared in 32 games with 10 starts across his first two NFL seasons before earning a starting role in 2023.

Detroit Lions defensive back Brian Branch suffered a neck injury on a helmet-to-helmet hit and was being evaluated for a brain injury after the game.

It’s a big loss for the defense, which was relying on Barnes to play a variety of roles, from edge rusher to run-stuffer to occasional cover man in the slot.