Since March Madness expanded to 64 teams in 1985, the only other year that all four top-seeded teams from their respective regions earned Final Four spots was 2008. That year, Kansas won a national title with an overtime victory over Memphis.

The NCAA men's tournament is down to four and that quartet will play in the Final Four. A look at the winners and losers of the regional round.

The final two bids to the Final Four will be awarded Sunday in a pair of seismic Elite Eight clashes as the second weekend of the NCAA Tournament winds to a close. Up first will be No. 1 seed Houston taking on No.

Top seeds Duke, Florida, Houston and Auburn saw minimal movement atop the title odds during dominant postseason runs. Despite this year’s Elite Eight teams tying with the 2007 tourney for the lowest combined seed total (13) in tournament history, the four No. 1 seeds demolished four quality opponents by an average of 12.5 points.

Purdue's Braden Smith has made history all season but might've saved his best for last – this Sweet 16 loss to Houston. And "last" could be literal.

After the first three tickets were punched for this week's Final Four on Saturday, the final spot in the national semifinals will be filled Sunday with the last Elite Eight game between Auburn and Michigan State.