Lions Sign Aidan Keanaaina, Release Chris Smith Before Week 7

Detroit made a direct practice-squad change at defensive tackle Tuesday, signing rookie Aidan Keanaaina and releasing Chris Smith. The transaction gives the Lions a younger 320-pound developmental option before their Week 7 NFC North matchup with Green Bay, but it does not immediately alter the active 53-man roster or the starting defensive line.

What the Lions officially announced

Detroit’s official transaction log lists two October 20 moves: Keanaaina joined the practice squad and Smith was released from the practice squad. The NFL’s Tuesday news roundup independently lists the same signing and release.

The practice-squad designation is the key context. Keanaaina has not been added to Detroit’s game-day defensive rotation simply because he signed. The club can now develop him, use him for scout-team work and evaluate whether he should become emergency interior depth later in the season.

Who is Aidan Keanaaina?

Detroit’s official roster lists Keanaaina as a 6-foot-3, 320-pound rookie defensive lineman from California. His official Lions profile credits him with 56 tackles, 2.5 tackles for loss and 1.5 sacks across 13 starts for California in 2025.

Those college numbers describe an interior run defender more than an established NFL pass-rush answer. Keanaaina’s size makes him a plausible nose-tackle or early-down depth project, but the move should be read as a development and insurance decision until Detroit either elevates him for a game or signs him to the active roster.

A local transaction analysis notes that Keanaaina originally joined Detroit as an undrafted rookie, was released with an injury settlement during the summer and is now eligible to return. That history helps explain why the Lions chose a familiar player rather than adding a completely new scheme fit.

What the move means for Chris Smith

Smith’s official Lions profile lists him at 6-foot-1 and 320 pounds with one year of NFL experience. The profile does not show a 2026 regular-season defensive appearance. Detroit did not announce an injury or give a reason for the release, so the safest conclusion is simply that the Lions preferred to use the practice-squad spot on Keanaaina.

That distinction matters because a practice-squad swap is not the same as benching an active starter. Smith was not occupying a regular game-day role, and Keanaaina does not automatically inherit one.

Week 7 impact against Green Bay

The broader matchup remains driven by Detroit’s active defensive front, Green Bay’s offensive-line health and the Packers’ backfield plan. Football Nation’s Packers at Lions Week 7 guide explains the rest advantage for Detroit and the importance of preventing explosive passes. Our Packers defense analysis provides the other side of the divisional matchup.

For Detroit, Keanaaina is best viewed as contingency depth this week. If the Lions keep him on the practice squad through game day, nothing changes in the active rotation. If they elevate him, his clearest early role would be limited interior snaps or emergency run-defense depth rather than a major pass-rush assignment.

Fantasy football takeaway

There is no immediate start-sit move here. Detroit’s D/ST outlook should not rise or fall because of a practice-squad exchange, and Green Bay skill players should not be downgraded solely because Keanaaina has returned. Fantasy managers should keep their attention on the official injury reports, active-roster transactions and Sunday’s inactive list.

• Lions D/ST: No ranking change based only on this move.

• Packers running backs: No projection change until Detroit’s active defensive-line availability and Green Bay’s workload plan are confirmed.

• IDP formats: Keanaaina is not a redraft add unless he reaches the active roster and earns a defined snap role.

What to watch next

Detroit’s first official Week 7 injury report and any later practice-squad elevations will determine whether this remains a developmental transaction or becomes a game-day depth move. The final checkpoint is the inactive list released before Sunday’s game at Ford Field.

Sources checked: Detroit Lions transactions, roster and player profiles; NFL.com Tuesday roundup; and Football Nation’s existing Packers–Lions coverage. Checked October 20, 2026 at 10:17 p.m. Central.