In direct correlation to that move, the Rams have promoted offensive lineman David Arkin and defensive lineman Morgan Fox from the practice squad.
It caps off what has been a frustrating last couple of years for Quinn dealing with injuries making just 15 starts over that span. This season, he had been admitted to a local hospital in mid-November after he began experiencing seizure-like symptoms that were later determined to be due to dehydration. Quinn was able to return the field for the next two games but had missed the last two contest because he was still going through the concussion protocol.
The coaching staff throughout the earlier portion of this week had grown optimistic about Quinn possibly taking the field on Thursday night against the Seattle Seahawks, but this designation ends that talk. The 26-year-old finished the 2016 season with 4.0 sacks and two forced fumbles in nine games played. With Quinn out of the mix, the Rams will likely turn to Eugene Sims and Ethan Westbrooks to fill the void at the position.
Despite dealing with nagging injuries over the last couple of seasons, Quinn has already compiled a successful career with 49.0 career sacks, which is the sixth-highest individual total in the league since 2012. This has played a huge part in the Rams having the third-most team sack totals (210.0) in the league over the last four years. Quinn also leads the league over the span with 18 forced fumbles. He is also scheduled to make $6.1 million next season with a $3.6 million roster bonus that became guaranteed after last year.
In his first four years in the league, Cunningham has solidified himself in the role as the backup running back while being the primary kickoff returner on special teams. The 26-year-old had missed Sunday's game against the Atlanta Falcons on Sunday with a neck injury that prevented him from participating in practice this week and had already been ruled for Thursday's game. He finished the 2016 season with 192 total yards from scrimmage while returning 22 kickoffs for 599 yards.
The Rams will look to Malcolm Brown as the primary backup to Todd Gurley in the backfield while either Mike Thomas or Pharoh Cooper will take his spot on kick returns. Cunningham scheduled to become a free agent after this season.