Former Virginia CB Chris Cook, now playing for the Vikings, suffered a broken hand in last night's game. He injured the injury early in the third quarter and did not return. It is unknown, at this point, what the timetable is for this injury and if he'll be able to return this season. A broken hand can table a player for anywhere for a couple of weeks to a couple of months. A CB is likely to be on the higher end of that list, since they need their hands.
The injury comes at a bad time for Cook, who was finally beginning to look like an NFL player. After missing much of his first two seasons due to injuries and legal troubles (he was acquitted of assaulting his girlfriend), Cook had started every game this season and was 7th on the team in tackles and had a sack.
Cook had been a big part of the Vikings surprisingly good defense. Case in point, the Buccaneers scored on a 64 yard screen pass the first play after Cook left the game.
Depending on the severity of the break, Cook may be able to return soon with a cast. That said, it seems likely that he'll be out for at least a month or so. Cook is signed for one more season with the Vikings at a reasonable $575k, so even if he isn't able to get back this year, he should be around next season.
Here's an nfl.com article about the injury. Get well soon Chris.