The Arizona Cardinals made a habit of making small roster moves over the off season in order to tweak the depth chart and infuse some competition at certain positions (namely tight end). They continued that trend today when they cut Donovan Raiola (currently the third team center) and signed Melvin Fowler. Now chances are you've never heard of Fowler but he's not just another spare part, in fact he's now one of the most experienced played on the Cardinals offensive line. Fowler is a 30 year center who started five games for the Bills in 2008 and every game during the previous two seasons. In all he's started 60 NFL games and appeared in 87, although the Bills weren't overly excited about his performance. Fowler may not be a future star in the waiting but he instantly becomes the best backup at center.
The Cardinals also placed fullback Justin Green on Injured Reserve, ending his season. Green was injured his knee very early in camp. The interesting thing is that with the three moves the Cardinals now have an open roster spot and the first official 'cut down' day isn't until September 1st. The Cardinals will certainly make a move at some point and it'll be interesting to see which position gets another warm body.