Running out the clock
In American football, each quarter of a game is measured with a 15-minute game clock, or 12-minute clock in many high school football codes and the German Football League. A team in possession of the lead and the ball will attempt to use up as much of the game clock as possible in order to bring the game to an end more quickly, thus denying the opposition another chance on offense.
NFL RedZone
As the games enter halftime, the coverage shifts over to games still finishing up the second quarter, even if there are no teams in the red zone. Some noncompetitive games that would otherwise not be looked at may take the attention for a few minutes, in order to fill the broadcast with as much live football coverage as possible. As soon as better games start returning for the third quarter, second half kickoffs typically take a priority.