The Detroit Lions claimed offensive lineman Bill Nagy, who was waived by the Dallas Cowboys because of an injury. Nagy was expected to compete for the starting center job but he sustained a high ankle sprain in the opening practice of training camp and had surgery on his left ankle for the second time in 10 months. He fractured the same ankle against the Patriots last October. The Cowboys expected Nagy to revert to their own reserve/injured list after clearing waivers. But much like the Patriots did with tight end Jake Ballard -- claimed from the Giants despite a knee injury that will keep him out this season -- the Lions took a low-risk gamble on Nagy returning to good health. Lions center Dominic Raiola is in the final year of his contract. Nagy started at center for Wisconsin after a moped accident in July 2009 in which he sustained ligament damage in his foot, broke his right wrist and right heel.