Dixon already had been suspended four games in March for violating the league’s policy on performance-enhancing substances. The latest two games are a result of a violation of the league’s substance abuse policy, Rapoport reported.
The 23-year-old Dixon will serve his suspension while injured, as he had already been ruled out for the entire season after sustaining a knee injury in July.
Dixon was second on the team in rushing with 382 yards on 88 carries in 12 games during his rookie season in 2016. He ran for two touchdowns and also had 30 catches for 162 yards and a score.
The 5-foot-10, 223-pounder earned an increasing role in the backfield late in the season with double-digit carries in four of his last six games.