The question on how the Arizona Cardinals would add safety Curtis Riley has been answered.
The team announced Thursday morning that they are placing starting safety Jalen Thompson on injured reserve, signing Riley off of the Pittsburgh Steelers practice squad.
This is not a huge deal for Thompson, as the NFL has made a major change in their IR rules:
New this season, a player going on injured reserve is allowed to return after missing only three games and teams may return an unlimited number of players from injured reserve throughout the year as long as they were placed on IR after the roster cut to 53.