The Ravens signed offensive lineman Randin Crecelius, linebacker Alvin Jones and running back Mark Thompson to the practice Monday.
Wide receiver Andre Levrone and defensive back Kai Nacua were released from the practice squad. The Ravens had one open spot after calling running back Gus Edwards up to the 53-man roster Saturday.
Crecelius had been on the practice squad earlier this season, but he was released Oct. 9 to make room for wide receiver/punt returner Tim White, who was re-signed to the practice squad after being released from the 53-man roster.
Jones was an undrafted free agent with the Ravens during training camp and the preseason, but he was waived on cutdown day in early September.
Thompson had some bright moments during the preseason for the Ravens, rushing for 91 yards on 14 carries in the preseason finale against the Redskins.
All three players are undrafted rookies that Baltimore groomed over the summer and will now get to continue to work with.