Buffalo began the process of locking up some of their practice squad players for their 2019 offseason roster.
The Bills signed WR Cam Philllips, DT Kyle Peko and DT Robert Thomas on Monday.
All three players spent most of their 2018 season on Buffalo's practice squad.
Phillips and Thomas both saw some brief action during the regular season as each were elevated to the 53-man roster for short stints.
Phillips appeared in two games in Weeks 7 & 8 at Indianapolis and against New England. He made his first NFL reception against the Patriots.
Thomas appeared in two games as well in Weeks 2 & 3 against the L.A. Chargers and at Minnesota.
Meanwhile, Peko was signed to Buffalo's practice squad after Week 1 and remained there the rest of the 2018 season.
It would not be surprising to see Buffalo sign more reserve future free agents going forward knowing how many undrafted rookies they cycled through their practice squad and called up to their active roster this season.