Following Saturday's preseason game, coach Jeff Fisher said Tre Mason "needs to keep working" on pass protection.
Tre Mason rushed for 30 yards on 12 carries in the Rams' second preseason game on Saturday against the Packers.
Rams OC Brian Schottenheimer said third-round RB Tre Mason has done a "great job" in blitz pickup.
Tre Mason rushed for 51 yards on 15 carries in Friday night's preseason opener versus New Orleans.
Tre Mason is listed with the fourth-team offense on the Rams' first unofficial depth chart of training camp.
Rams coach Jeff Fisher labeled rookie Tre Mason as a "change-of-pace back" following May's draft.
ESPN Rams reporter Nick Wagoner guesses third-round pick Tre Mason could garner 8-10 carries per game as a rookie.
Rams signed No. 75 overall pick RB Tre Mason to a four-year contract.
Rams fourth-round RB Tre Mason says the coaching staff has told him he'll compete for the starting job.
ESPN Rams reporter Nick Wagoner "wouldn't be surprised" if third-round RB Tre Mason overtakes Zac Stacy for the starting job at some point in 2014.
Rams selected Auburn RB Tre Mason with the No. 75 overall pick in the 2014 NFL draft.
The Nashville Tennessean says the Titans like Auburn RB Tre Mason.
Team doctors from two NFL clubs told the Milwaukee Journal-Sentinel that Auburn RB Tre Mason will need post-draft wrist surgery.
According to NFL Network's Ian Rapoport, Tre Mason's wrist injury is a "chronic scaphoid fracture."