The Ravens placed rookie center Alex Thompson on the reserve/did not report list Thursday.
The team’s rookies were scheduled to report for training camp Wednesday.
Thompson went undrafted out of Monmouth and signed with the Ravens as a free agent. He was a three-time All-Big South honoree with 44 starts in 45 career games.
He also was a third-team All-American last season.
Thompson, who won a state wrestling championship in New Jersey as a heavyweight in 2013, attended Milford Academy after high school and then went to West Virginia to wrestle before transferring to Monmouth.