The Rams signed Grupe off the Jets' practice squad Tuesday, Mike Garafolo of NFL Network reports.
The Rams plan to waive Mevis on Tuesday, Mike Garafolo of NFL Network reports.
Stafford completed 40 of 54 passes for 383 yards with three touchdowns and no interceptions in the Rams' 37-34 overtime loss to the Bills on Monday night.
Adams brought in five of seven targets for 51 yards and two touchdowns in the Rams' 37-34 overtime loss to the Bills on Monday night.
Corum rushed five times for 19 yards and a touchdown and brought in three of four targets for 53 yards in the Rams' 37-34 overtime loss to the Bills on Monday night.
Williams rushed 16 times for 49 yards and a touchdown and brought in six of eight targets for 27 yards in the Rams' 37-34 overtime loss to the Bills on Monday night.
Higbee brought in five of six targets for 83 yards in the Rams' 37-34 overtime loss to the Bills on Monday night.
Nacua brought in 17 of 24 targets for 138 yards and a touchdown and rushed twice for nine yards in the Rams' 37-34 overtime loss to the Bills on Monday night.
Jennings did not reel in his only target during Sunday's 23-13 win at New Orleans.
Simpson (coach's decision) is inactive but will serve as the Rams' emergency third quarterback against the Bills on Monday, Nate Atkins of The Athletic reports.
