A few weeks ago the Kansas City Chiefs signed CB Mike Richardson with some injuries in the secondary. He was apparently a precautionary move as he wasn't active in the last three weeks and now the Chiefs announced he has been released. Taking his place is WR Quinten Lawrence, a 2009 draft pick that has spent the year on the practice squad.
The Chiefs are getting healthy in the secondary so Richardson's presence isn't as critical. He'll probably be waiting for another call from the Chiefs in case of injury.
I'm not sure if this was the case here but occasionally teams will sign key players off the practice squad to the 53-man roster because they don't want them plucked by another team. Practice squad players are free to sign with other teams and teams will sign other practice squad players now to get them on their offseason roster.
We'll see if Lawrence plays today. I'm thinking he won't since he hasn't been part of the active roster this year but Todd Haley and Co. also don't listen to me when figuring out the game day roster.