Moffatt is a 5-11, 213 pound rookie out of Middle Tennessee State. He was signed as an undrafted free agent and spent the first three weeks of the season on the Browns' practice squad. A native of Union City, Tenn., Moffatt will wear No. 35.
Natson served as the team's primary kickoff and punt returner the first three games. He sustained a knee injury in the second quarter against Washington.