Jones appeared to injure his left ankle near the end of Saturday's preseason loss at Denver, Jourdan Rodrigue of The Athletic reports.
It's yet another injury to the Rams backfield. Previously, Cam Akers tore his Achilles in late July, Raymond Calais was forced to IR due to a mid-foot fracture, and presumed starter Darrell Henderson sprained his thumb at practice Monday. GM Les Snead brought in reinforcements this week, trading for Sony Michel from the Patriots. However, coach Sean McVay held both Michel and Jake Funk out Saturday, leaving the backfield to Jones and Otis Anderson. Prior to his exit, Jones, an undrafted rookie, accrued 44 yards on 13 carries and hauled in three of five targets for 20 yards.