What do the grey areas mean?Welcome to the world of blackout rules. The short answer is: no game at all. This can be due to one of two rules: a) no games can air at the same time as a local team’s home game on another network, or b) if a game is blacked out because it doesn’t sell out, the network with the doubleheader can only show one game. Don’t shoot the messenger, I think the rules are stupid too.So what exactly are the blackout rules?The short answer: If a game doesn’t sell out within 72 hours of kickoff, there is no local television broadcast. “Local” in this case is defined as anywhere within 75 miles from the stadium. If a station from outside that 75-mile zone has any part of its coverage area crossing over, it (usually) gets blacked out too. This is why virtually all of Arizona, for instance, gets blacked out of Cardinals games. If a team comes close to selling out, the NFL can grant a 24-hour extension.