Jones handled eight carries for 48 yards and caught one pass for a one-yard score in Thursday's preseason finale against the Rams.
Jones worked behind fellow rookie Jamaal Williams, who received the start at running back but gained only 31 yards on 11 carries. Williams has been second in the backfield pecking order all summer, but his extensive usage and lack of production in Thursday's exhibition provides reason to question the security of his spot on the depth chart. Jones could make a push for backup work if Williams struggles in relief of Ty Montgomery early in the season.