Lions release longtime backup center Darren Keyton

Since the NFL Draft, the Detroit Lions have tinkered with the roster a bit. Braxston Cave and Casey Pierce got the axe earlier in the week. Wide receiver Andre Caldwell was added while tight end Jordan Thompson was sent packing. This time, in their official announcement of the Caldwell signing, the Lions announced they have parted ways with backup center Darren Keyton.

Keyton was signed as an undrafted rookie free agent by Detroit back in 2013. Since then, he has bounced on and off the roster, between waivers and the practice squad. Keyton never made it to an active gameday roster, and he missed the entire 2015 season with a knee injury suffered in the preseason.

The Lions now have quite a bit of depth on the inside of the offensive line. After grabbing Geoff Schwartz in free agency and drafting both Graham Glasgow and Joe Dahl, the Lions suddenly had a surplus of bodies. First it was Cave who was released, now Keyton will have to find a new home.

UPDATE: According to the official NFL transaction wire, Keyton was released upon failing a physical.