The Super Bowl is delayed in the third quarter because half of the Superdome has been hit with a power outage.
Baltimore Ravens kick returner and wide receiver Jacoby Jones opened the second half with a Super Bowl record 109-yard kickoff return to give the Ravens a 28-6 lead.
San Francisco is driving with the ball, trying to make a comeback.
The power outage may freeze the Baltimore Ravens offense, which has not been on the field since the halftime.