According to multiple sources Cardinals first round pick OG Jonathan Cooper has broken his fibula and may miss the season. I will continue to update as more information becomes available.
Update: From what I can find it appears that the injury was associated with an ankle injury. if the injury is a bimalleolar ankle fracture it will most likely require surgery and from what I can find surgery like that can take years to recover from. It is way too early to speculate but the 7th overall pick in this years draft will have to take his recovery very seriously.