While the Lions are totally set at the top of the RB depth chart with Jahmyr Gibbs, there are productivity and health questions among the backup contenders.
Here is the medical review of the Lions running back depth as seen in Lions 2026 Training Camp Medical Preview: Running Backs.
(Age at start of season in parentheses.) Click on player name for full medical report if available.
Sione Vaki (25)
Medical concern level: 4/10
Vaki has not lived up to expectations so far as a RB, and his injuries may have a lot to do with it. In 2025, he had multiple hamstring strains along with a groin injury, which led to six missed games total.
OUTLOOK: While Vaki does a lot of work on special teams, it’s time for him to start showing some value as a RB as he enters his third season.
Jacob Saylors (26)
Medical concern level 1/10
Saylors missed one game last season with a minor back issue. He appeared in 16 games but only had two rushing attempts.
OUTLOOK: Saylors has shown some juice as a kick returner. He may get a chance to see if that special teams juice translates to offense in 2026.
For medical review of the other RB contenders Kye Robichaux and Jabari Small, visit Lions 2026 Training Camp Medical Preview: Running Backs.
For more Lions coverage, follow us on X, @TheLionsWire, and give our Facebook page a like. Follow Jimmy on X, @JimmyLiaoMD
This article originally appeared on Lions Wire: Detroit Lions Training Camp Medical Injury Preview: Running Back Depth
Reporting by Jimmy Liao, MD, Lions Wire / Lions Wire
USA TODAY Network via Reuters Connect
By Jimmy Liao, MD, Lions Wire | USA TODAY Network
