The Detroit Lions swapped out cornerbacks on Tuesday morning by bringing back a former player. Conroy Black was signed by the team, and Brandon King was released just one week after coming to Detroit.
The Lions originally signed Black as a member of the practice squad last season. He signed a futures contract as 2012 came to a close, and he was in attendance for the Lions' rookie minicamp in May. The Lions released him shortly after that, though, and he joined the Kansas City Chiefs at the end of July. They released him a couple weeks later, and now he's back with the Lions.
King actually just joined the Lions on Aug. 5. He was added when the Lions released linebacker Alex Elkins and wide receiver Devin Thomas, but clearly they didn't like what they saw out of him in the week he was on the team. As a result, they decided to bring back someone they're already familiar with by signing Black.
Since these two moves were made at the same time, the Lions still have 90 players on their roster.