The Detroit Lions claimed offensive guard Derek Hardman and linebacker Cory Greenwood off waivers on Friday afternoon. Hardman was just let go by the Tampa Bay Buccaneers, while Greenwood was recently released by the Kansas City Chiefs.
Hardman has been in the NFL since joining the Buccaneers as an undrafted free agent back in 2010. He made four starts for the Bucs in his rookie season, and he was active for a total of 15 games in his three seasons in Tampa Bay.
Greenwood was actually the third overall pick of the 2010 CFL Draft, but he ended up signing with the Chiefs. He was active for every single game the past three seasons, and he recorded a total of 34 tackles in that time, indicating that he's an excellent special teams player.
These two moves appear to be about depth more than anything for the Lions. Hardman will try to compete for a roster spot at offensive guard, whereas Greenwood will try to leave his mark as a reserve linebacker and special teams player.
In other roster news, the Lions announced the signing of six undrafted free agents on Friday. I'm not sure why there weren't 11 players like earlier in the week, but that's something to keep an eye on going into the rookie minicamp next week.
UPDATE: The Lions have now announced the signing of the other five undrafted free agents.