St. Louis Rams Running Back Trey Watts still has not learned from his past mistakes. Backup running back Watts, the son of the former US lawmaker has been suspended indefinitely without pay for violating the NFL’s substance abuse policy the league announced on Wednesday. ESPN’s Adam Schefter first reported the news via twitter on the 24-year-old running back. Watts has only appeared in only one game this season. Watts played nine special-teams snaps in the Rams’ Oct. 25 win against the Cleveland Browns but was inactive last week against San Francisco. He was listed fourth on the Rams running back depth chart behind, Todd Gurley, Tre Mason and Benjamin Cunningham.