Parkinson (shoulder) didn't participate in the Rams' practice Wednesday, Sarah Barshop of ESPN reports.
Parkinson was sidelined due to the sprained AC joint he suffered during the team's Week 1 win over the Texans. While the 26-year-old tight end will look to be good to go for Sunday's game versus Titans if he ends up being unable to play, Davis Allen (knee) and Terrance Ferguson would be in line for increased playing time.