T1B

Toronto had the puck during a 5-minute power play at 11:41 of the second period when the arena went completely dark and caused play to stop. Some lights returned almost immediately, and the game resumed 18 minutes later.

Many in the crowd of 15,174 seized the opportunity to chant, "New A-Re-Na!" Penguins officials, who are pressing politicians for a new home, showed a video touting their plan during the stoppage.

The Maple Leafs went back on the power play, but the building went partially dark again at 12:52 of the period.

This time, the referees sent both teams to their locker rooms and tacked on the final 7:08 of the second period to the third.

Sawyer said the initial blackout was caused by the failure of a line running to the arena. The second came when the local power company, Duquesne Light, turned on a secondary power system that overrode the primary.

Hundreds of fans left the arena during the second stoppage and didn't return.