Changing the overtime format - currently sudden death - could raise the excitement level even more.

The overtime format was changed.

The modern overtime format was set as a five-minute, sudden death period; the game ended when either team scored.

The owners also decided not to overhaul the sudden-death overtime format, turning down a proposal for a two-possession overtime rule.

As for rules changes, Bettman said, "The feedback we've gotten has been overwhelmingly positive" for the new overtime format.

Notably, the Texans become the first NFL team to score twice in an overtime period under the new overtime format.

The Alouettes won this game in a pre-planned demonstration of the CFL's new overtime format 19-16.

There are no tie games in this conference; an overtime format ends deadlocks.

The Kansas City Chiefs have asked that the league change its overtime format.

The teams then began the suden-death overtime format.