The Detroit Lions claimed two players off waivers on Friday, securing the services of linebacker Cory Greenwood and guard Derek Hardman, according to the team's official website. The six-foot-two, 235-pound Greenwood, a native of Kingston, Ontario, was the third overall pick in the 2010 CFL draft. He joined the Chiefs as an undrafted free agent that year and has appeared in all 48 games over the past three seasons.