Sims (knee) was not a participant at Saturday's practice, Greg Auman of the Tampa Bay Times reports.
The Buccaneers could be thin at running back Monday against the Panthers as both Sims and Doug Martin (hamstring) are unlikely to play after failing to practice throughout the week. In such a case, Jacquizz Rodgers and Peyton Barber would take over the duties in the backfield. Sims' next opportunity to return figures to be Week 7 versus the 49ers following the Bucs' bye week.