Sione Vaki: Everything you need to know

Vaki could have an opportunity to compete for the No. 2 spot at running back with the Lions in 2026. Vaki was scarcely used during the 2025 campaign, logging just two offensive snaps over 11 games, turning his only carry into a four-yard gain. With primary backup David Montgomery being dealt to the Texans on Monday, Vaki currently sits as the most experienced reserve option behind starter Jahmyr Gibbs in Detroit's backfield. The Lions will almost certainly bring in competition for the 2024 fourth-rounder in free agency or the 2026 NFL Draft, but he will have his clearest path toward playing time ahead of his third season with the Lions.

Vaki rushed the ball one time for four yards while also adding 39 kickoff-return yards during the regular season. Vaki logged two total offensive snaps during his sophomore campaign with the Lions, operating as a distant depth option behind Jahmyr Gibbs and David Montgomery in the backfield. The running back was an intriguing asset as a fourth-round pick in the 2024 NFL Draft, but with both Gibbs and Montgomery under contract for next season, his upside will once again be limited greatly.

Vaki (thumb) was a full participant in Thursday's practice. Vaki upgraded to a full participant Thursday and was cleared of any injury designation after being limited with a thumb issue in Wednesday's session. The running back will likely continue in his role as a relief option behind starters Jahmyr Gibbs and David Montgomery for Sunday's game against the Steelers.