The Detroit Lions made some changes at the top of their running back depth chart, parting ways with David Montgomery to pave the way for Jahmyr Gibbs to become the undisputed No. 1 of the backfield.
While the team added veteran Isiah Pacheco for insurance behind Gibbs, one insider believes the real competition will take place one spot lower on the depth chart, where a pair of special teams regulars will be competing for the third and potentially final spot on the roster.
Sione Vaki Needs to Prove Himself
SI.com’s Christian Booher broke down the team’s initial depth chart, noting that it is a bit crowded behind Gibbs and Pacheco. The team has four running backs — Sione Vaki, Jacob Saylors, Jabari Small, and Kye Robichaux — competing for what could be the third and final spot.
Booher wrote that this will be a chance for Vaki to prove himself to be more than just a special teams standout. He will face competition from another running back who proved his worth as a return specialist.
“With the top two spots all but set, the eyes will be on the competition for the third spot,” Booher wrote. “This is a big year for Vaki, who is looking to prove that he can contribute to the offense after being mostly a special teams player. The same can be said for Saylors, who handled kick returns a year ago.”
Vaki has had few chances on offense through his first two seasons with the Lions, taking just seven carries for 18 yards and adding three receptions for 37 yards. He has made a much greater impact on special teams, making 18 total tackles with one forced fumble. Vaki appeared in 71% of the special teams snaps in his first season with the Lions and 60% last year — while playing just one total offensive snap in 2025.
Sione Vaki Still Trying to Live Up to Rookie Hype
It appeared that Vaki could have been headed to a much larger role with the team, especially after his strong start. He earned significant buzz during rookie minicamp and through training camp in 2024, with Lions reporter Tim Twentyman of the teamâs official website saying the former Utah running back looked “dominant” in offseason practices.
âAfter watching fourth-round pick Sione Vaki take part in the first open rookie minicamp practice on Friday, itâs easy to see why the Detroit Lions fell in love with his game in the pre-draft process,â Twentyman wrote.
âHe was dominant in special teams periods, at one point getting to the returner first for what would have been a tackle (no hitting or pads in minicamp) on three straight reps he took part in on the coverage team.â
It’s clear just how much production the Lions could get from their third running back spot. ESPN predicted that Pacheco will move into a significant role, calling his signing one of the most underrated moves of the offseason.
“The signing of unrestricted free agent running back Isiah Pacheco. Pacheco is viewed as a replacement for Montgomery, who was traded to Houston, and he’s confident that his violent running style will complement Jahmyr Gibbs’ speed in the backfield,” the report noted. “He is hopeful that the move to Detroit will also spark a new beginning for a career that has gotten off track. Last season, he finished with a disappointing 462 rushing yards and two total touchdowns in 13 games but appears to be motivated by the new situation.”
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