The Ravens signed three more undrafted free agents on Monday.
Rivers opened his collegiate career at Georgia, but wound up at junior college after marijuana arrests and ultimately finished up at Mississippi State. He had eight tackles for loss and five sacks during the 2019 season.
Pollard started 38 games at center for Clemson and finished his time in school as a second-team All-ACC selection.
Ravens announce three undrafted free agent signings originally appeared on Pro Football Talk