NFL blackout rules allow for a blackout of live televised home games within 75 miles of a team's stadium if a certain ticket sale threshold is not met. That radius covers a significant portion of South Florida if the Dolphins blackout a local game.
The ticket threshold was lowered this season, as the Dolphins now require just 85 percent of non-premium seats to be sold in order to avoid a blackout. Previously the stadium would need to be sold out 72 hours prior to kickoff for the game to be televised live in the Miami area.
The Dolphins have not had a regular-season home game blacked out since 1998.