It's not just blackouts: other delays that have affected sporting events

Editor's note: The 49ers aren't strangers to power outages. Nearly 14 months ago, the lights went out twice in a Monday night matchup between San Francisco and Pittsburgh at Candlestick Park. The first outage, a 20-minute delay, happened before the game, while a second-quarter blackout caused a 16-minute delay.

The San Francisco 49ers-Pittsburgh Steelers game has started after a 20-minute delay because of a power outage at Candlestick Park.

The power throughout the stadium went off about 25 minutes before the scheduled kickoff of 5:40 local time Monday. The public address system stopped working and fans were left in the dark until an emergency light came on in the far corner of the stadium.

A 49ers team spokesman said transformers appeared to fail outside the stadium. City engineers were working to switch the power over to the backup generators.

Continue reading about the Monday Night Football power outage in 2011.

Up next: Could there be two straight Super Bowl power outages?