Arnold’s rookie struggles in man coverage set up Odunze’s favorable targets, but his Week 1 performance is a reminder that Chicago’s WRs may exploit the Lions’ corner depth. Arnold faces a meaningful Week 2 test against Odunze.

Arnold is the Lions’ emergent corner, under pressure from a new coaching staff to erase previous lapses and prove he can anchor Detroit’s secondary. His early groin issue and rough start versus Green Bay underline the need for rapid maturation, while Kelvin Sheppard and Deshea Townsend push a professional-standard approach to football IQ. The trajectory hinges on translating training-ground progress into game impact.

Arnold, Detroit's second-year corner, sustained a groin injury in the Week 1 loss to Green Bay. He finished with six targets against him in 23 snaps, yielding four receptions for 86 yards, including a 48-yard completion and a 17-yard TD on consecutive Packers plays after the injury. Campbell indicated the injury isn't necessarily serious but left Arnold's Week 2 availability in question pending an MRI. If out, Amik Robertson would move outside; Rock Ya-Sin could enter the outside rotation.

Arnold, 2024 first-round pick, exited with a groin issue after starting at corner. He played through the early portion of the game before being ruled out for the second half, with an MRI planned for Monday to determine severity. His status directly influences Detroit’s Week 1 cornerback plan and fantasy-related defensive expectations.

Arnold drew three first-half targets in coverage and allowed multiple completions, including a deep shot to Doubs and a Reed TD. A late groin injury ended his night; the rust from preseason continuity shows, with a clear path to rebound if he regains form soon.