- The Bills also signed LS Reid Ferguson to their practice squad and waived K Marshall Morgan.
Roberson, 24, originally signed on with the Rams as an undrafted free agent out of Florida back in May of 2014. He was able to make the 53-man roster in each of his first two years in the league but was unfortunately cut loose coming out of the preseason a few months ago.
The Bills later signed him to their practice squad before calling him up last week.
In 2015, Roberson appeared in all 16 games for the Rams and recorded 29 tackles, no interceptions, a forced fumble and six pass defenses.