The stakes are growing higher for the school and the coach who faces a once-in-a-lifetime opportunity.

"This creates a once-in-a-lifetime political opportunity for people to get into leadership."

Wasn't this a once-in-a-lifetime opportunity to try for the dream?

This is a once-in-a-lifetime opportunity you can't afford to pass up.

"You have a once-in-a-lifetime opportunity to deal with a very serious problem in this state," he said.

This is a once-in-a-lifetime opportunity to give something to my country.

At the time, a trip abroad was considered a once-in-a-lifetime opportunity.

While accepting that the trip was a once-in-a-lifetime opportunity, her mother had been less happy about it.

Her family agreed to the visit, seeing it as a once-in-a-lifetime opportunity.

"To be able to create an album where you are in complete control of your own work is a once-in-a-lifetime opportunity for an artist."