The circumstances surrounding Rams running back Tre Mason are extremely strange and the team has become quite concerned about his well being, according to coach Jeff Fisher.

Mason was placed on the Reserve/Did Not Report list when the Rams began training camp, which followed on the heels of Mason being excused from OTAs for "personal reasons."

Fisher said he hasn't spoken with Mason since the 2015 season ended.

Combine the lack of contact with the Rams with previous police incidents -- Mason had the cops called to his house five times this offseason -- and there is very much a reason to be concerned for the running back.

At one point he looked like a promising option for Los Angeles, running for 765 yards in his rookie year and catching another 16 passes for 148 yards. He was an explosive, home-run threat of a back.

Fisher and GM Les Snead drafted Todd Gurley before 2015, however, and it made Mason largely irrelevant on the depth chart. He was clearly bothered by the draft-day decision and it cost him on the field. Mason carried the ball just 75 times in his second year with the Rams while Gurley ran his way to Rookie of the Year honors.

Now he's gone AWOL from the Rams and appears to be in a bad place, personally.