Tre Mason was arrested on drug charges and traffic violations back in March, and now he has missed the start of training camp, for what the coach called, personal reasons. Mason has been placed on the Reserve/Did Not Report list after missing Saturday’s practice. He has also not participated in any offseason programs. Mason’s frequent run-ins with the law over the five months, could be more than the Rams are willing to deal with and could result in the backup running back being out of a job.